They also sell the most, so that's not surprising. They also have the best support and tech community.
I have a Vertex-3 that freezes regularly and locks up any SATA controller it's on regardless of AHCI or IDE mode. I replaced it with a Vertex-4 that's rock solid with no issues of any kind. The sustained transfer rates are nice to have, but its the IOPS that is the most noticeable. The Vertex-4 is great for that, and it looks like the Vector is even better.
Given the alternative of platter based drives, any SSD is better than none. Looks like the Vector will be my next one.