Anand Lal Shimpi has written a 2011 mid-range solid state disk roundup, you can read it over here.
The test includes the Corsair P3 128GB, Crucial RealSSD C300 128GB, Intel SSD 320 160GB, Intel SSD 510 120GB, OCZ Agility 3 120GB, and OCZ Vertex 3 120GB.
A year ago whenever I'd request an SSD for review I'd usually get a 128GB drive built using 3x nm 4GB 2-bit MLC NAND die. These days the standard review capacity is twice that as most drives ship with 25nm NAND, using 8GB die. Seeing a bunch of scores for 240GB+ drives however is frustrating to all involved. At these capacities you're almost always looking at two die per NAND device, which has significant performance benefits due to interleaving. Most SSD controllers have eight NAND channels and with sixteen NAND deviecs with two die per device that's four NAND die that the controller can interleave access between for each channel. The 128GB drives by comparison half the number of NAND, which only allows the controller to interleave requests among two die.