U serious? its hard enough getting dudes to post full benchmarks, let alone a microscopic 20 digit hexadecimal code as well! And even then, as you have found, you can't get the code off a potential seller beforehand anyway.Damn, no model numbers
EDIT: and that post has been maintained for almost 6 months now, and look, I've got a whopping 30 results (and about 8 of them are my results from my own cards). Seems everyone wants to know this info before they buy, and then are like meh whatever (until its time to upgrade - rinse/repeat).
Unfortunately there is no middle ground in microSD cards right now. Cards are either good at sequential and very vey sucky at random. Or good at random and not quite as good at sequential.
So just buy whichever one for what you think you will use more of.
In my case, coupled with the in-phone benchmark results, I can see that sequential write speed is not important, so I will go with random writes (ie. Sandisk 32GB).
If I was going to use the card in a digital SLR, I'd get one with good sequential writes (ie. Lexar).
If I wanted one to do both, I'd still get the Sandisk, since its only half the sequential speed, and so is still good enough for most cameras. Whereas the Lexar is gonna suck balls if I try to run apps2sd or a live ROM/CD off it.