SSDs aren't as easy to model as spinning drives, but either way, it depends on your use case. Definitely get as much data from others as possible, but very few people will be running the same use cases as you.

You can probably figure out the general class of storage you need / can afford, which is interface and bits per cell, but then you probably need to try several well regarded drives (or several dodgy drives, if that's what you can afford) to see how they work for you. Or just go with whatever your hosting provider can supply ;)