Non-zero Y-axis and 'Quite a bit slower'?
"But Vertex 4 is not faster than Vertex 3 bandwidth-wise; in fact it is quite a bit slower at sequential reading. It appears that OCZ has optimised the thing for random I/O and been unable to get sequential I/O up to Vertex 3 levels, which is a pity."
Look, maybe it's me, but when you graph stuff (looking at second graph here) not from a zero Y-axis you should say so. Especially given the previous graph is from a zero Y-axis. I expect better from The Register.
Also, from your numbers (550 Vs. 535 MB/sec), I would not say that it is 'quite a bit' slower given it is around 3%. Yes slower, but 'quite a bit'?
No, I am no OCZ fanboi, and no, I don't have an SSD (yet) - but I am looking at these products and I appreciate balanced reports.