Selfhosted

Just stick with known vendors, and find a good price. Make sure you have a solid warranty and backups, and you'll be fine.

Not Sandisk. Had several just die with no recovery possible.
Kingston had a few failures but probably OK as a cheap one.
Only had one Samsung crash, so mostly sell those despite the premium these days.

Crucial MX 500 & Samsung 870 Evo are reliable / good & "cheap" SATA SSDs. For NVMe there's the WD Blue SN570 and the Kioxia Exceria G2 but keep in mind that they tend to have smaller storage sizes too and depending on your use case you might not really notice a performance difference between SATA and NVMe anyway. Personally, I stay away from all native Chinese products. They tend to have terrible quality and fall apart quickly. I'm sure there's exceptions here and there but wading through all the garbage and having to buy twice does not seem worth it and I rather support that country as little as possible anyway.

Crucial and wd are usually the cheapest and they're reputable

When I needed them, Crucial bent over backwards for a single sale.

I've given them 100% of my business since for any solid-state stuff.

I'm just one internet dood but please include them in your list of candidates. They have several tiers of speed and resilience, and I'd love to see them get more business.

Personally I use Newmaxx's site and spreadsheet which has more indepth information about the SSDs like their controllers and NAND type - https://borecraft.com/
You can also check their subreddit for some reviews and such.
That and some stats from Backblaze and general reviews.
And I use price trackers to make sure I'm getting a good price.

I don't like going by specific brands, because they all have some less ideal models and some of them tend to change some of the components after a while.

Price to published write endurance might get you started, but I’m curious what answers you get because this is a difficult question IMHO. Actual reliability depends heavily on firmware which is a vendor-specific secret sauce.

If you live by a Micro Center, their house brand is pretty good.

I've got a couple machines running Kingston A400's well over their rated spec, those are decently fast and start at about 30 euros

I've had good luck with WD Blue NVME (SN550)

I've put several of those into machines at work and have had years without an issue. I'm also running a WD Blue SN550 1TB in my server as one of the caches, 25000 hours power on time, >100TB written, temperatures way higher than they should be and still over 93% health remaining according to smart.

I buy Samsung SSDs when I can afford them, Kingston when money is tight. Samsung is faster, especially their NVME drives. Both have been very reliable for me.

I noticed that the prices of SSD almost doubled in the last months. I bought a 2tb nvme for 89 euro and now it requires almost the double

WD and Seagate are using the AI hype as an excuse to increase prices on both SSD and HDD. They say AI bros are buying too many drives to store the models. I find this not really believable. Normal models are a few hundred GB, I don't think that they're pushing so much the demand

We have hundreds of Samsung 860/870 EVOs in operation at my work now. All of them are working reliably in both windows and linux machines running 24/7 for years. Some more heavily used (local postgres db) are probably not in the best condition, but still working. Speaking of mostly 250 GB ones.

We used to buy OCZ brand. First OCZs (Vertex 3) were amazing, some of them are still in work for 10+ years. Vertex 460 still great, again, some are still in use. But ever since Toshiba came in and old models were replaced with Trion models, it went to shit. Some of those models in the same environment started to fail (and I mean critical failures, like no OS after reboot or missing data etc.) after less than a year. Some of them still run in less critical PCs with light use, but do I trust the brand? Hell no.

I just checked one 250 GB OCZ Vertex 3 running for ~10 years with Crystaldisk. It has over 220 TB written, 300 TB read, and crystaldisk still shows roughly 40% lifetime left. It ran in badly wented, really dusty Dell Optiplex with Windows XP.

Edit: Personally I also have good experience with Crucial/Micron too, but that's just based on home use for storing music, documents, steam games and not much else.

I have a friend who's in the computer repair business. He uses PNY drives because out of the hundreds he's installed, he's yet to see one come back with a faulty drive, unlike some of the other brands he's tried like Kingston. He gets the base size and base speed drives as his customers tend not to use a lot of data.

pretty sure the sn570/550 used to be a pretty good deal

iirc they don't sell it much anymore, maybe the sn580 is still a good deal?

Teamgroup makes decent enough products.

I used Crucial brand in both my desktop and my laptop upgrades a few years ago (I don't remember the exact model...mx500 maybe?) And I haven't had a single issue.

Absolutely rock-solid.

Inland, Sabrent, XPG and PNY are all relatively inexpensive and very solid options for NVMe.