Computer hardware created equal? Hasn't been like that since computers were the size of an entire room.
Computer hardware shopping is like shopping for a car these days. You have to compare specs, prices, and even manufacturer reputations at times (And of course, sometimes you just have to throw in your own personal bias about which make and models you like).
For computer builds though, you'll really only need 1 SSD; unless you plan on doing any RAID configs. A standard SATA drive for data storage (and a bit of cost savings) should suffice for most people's needs, and still right now, you can get more storage capacity for less money. So you can store all your music, documents, pictures, movies, etc.