Just want to add a few more points.
Top 6 NAND Flash manufacturer in the world:
Intel
Samsung
Micron (Parent company of Crucial)
SK Hynix
Sandisk (Acquired by Western Digital)
Toshiba (Parent company of OCZ)

Intel SSD are the best, but worst in term of price/performance. Their high end range such as 750 Series are the best but crazy like shit. Their low end series is reliable but shitty in performance. Intel 520 Series is reliable in terms of longevity because it uses Intel's own Nand flash. But its performance is shit because it is close to 4 years old now and using an very old Sandforce controller.

Samsung SSD is very good too, great in term of price/performance. Especially the 850 Evo series, although is TLC but manufactured in 3D architecture, matches reliability of MLC but better in performance thanks to SLC cache.

Micron SSD is great in term of price/performance. MX 100, BX 100 and MX 200 Series are all good one. Except for the BX 200 which uses 2D/Planar TLC Nand Flash. Shitty.

SK Hynix mainly supplies Nand Flash to other SSD Manufacturer. They release very few SSD themselves.

Toshiba SSD is good too. They release SSD under their own brand and also OCZ (Acquired few years ago). OCZ's 2D TLC series Trion 100 is lousy too.

Sandisk (recently acquired by Western Digital after Western Digital sold 15% of their own share to China's Tsinghua Unigroup for funding) SSD are also great. Except for their latest entry level Ultra II series, another 2D TLC SSD.

If you want good price/performance entry level SSD, go for 850 Evo and MX 100/200.
If you don't care about performance, simply want lowest price, then go for any TLC SSD such as BX 200, Trion 100, Ultra II, SP550 etc.
If you can get old drives such as Intel 520 at a good price, then it's still a good option.