The first thing I would ask is what do you intend to do with your pc? Is it for professional use or gaming? What software applications do you use?
More important - What type of ssd are you looking for? Are you looking for an mSATA. M.2 NGFF, SATA 3, or PCIe ssd?
I normally recommend Samsung. Their ssd's perform very well and have a proven track record.
I maintain the ssd database listed in a sticky at the very top of this forum section. Here is the link:http://www.johnnylucky.org/data-storage/ssd-database.html
Scroll down to the brands and models you are interested in and follow the links to the technical reviews.