I’ve got one of the 3.5″ Vertex 2 SSDs. It took me two RMAs to get one that was solid, but it has been working well since that time.
I read a lot of the criticism has to do with the change in NAND chip tech. It is a bit disappointing to have a few less GB, but obviously not the end of the world. My Vertex 2 has 107 GB available.
