I have owned a lot of SSDs from my first Corsair R120 which cost over $400 at the time through OCZs, Sandisks & Plextors...RAID configurations and a PCI-E SSD, however I have been very happy with my 512 GB Samsung 840 PRO.
RAPID mode; 7mm wide; high capacity (1 TB) available
IOPS a little low in comparison