I know the older OCZ ssd's had lots of complaints of failures, that's why I was kind of nervous about getting the Vertex 4, but with a 5 year warranty it looked like they were finally backing the product with some level of confidence. The Vertex 4 is insane in terms of speed. Like yrag said, I only had to use it to know it was insane in terms of speed.
I dont know but i keep away from OCZ since they started banning people from the board because they asked questions regarding product failures and bugs. I certainly dont know how things are handled nowadays by OCZ.
But just to compare :
OCZ Agillity 4 Series 2,5 SSD, SATA 6G-256GB vs ADATA Premier Pro SP9000 Series 2,5 SSD, SATA 6G 256GB
OCZ: read 420 MB/s write max 410 MB/sIOPS (4KB Random Read): 48.000IOPS (4KB Random Write): 85.000
Price : 174,90 EUR 3 year warranty
ADATA: read 555 MB/s write 530 MB/s
IOPS: max. 90.000 (4K Random Write)
Price : 179,90 EUR 3 year warranty
I dont know but with 5 euros difference i would go for the fast one, why do i write this just to know why people are so into OCZ they barely get sold here as far as iam told ( Shop ). I know OCZ sold pretty well when SSD´s came to the market and OCZ was marketing their products at conventions.