Anandtech recently talked about their server infrastructure upgrades and they used Intel X25-M G2 160GB's, partitioned down to 120GB (increasing the spare space and increasing drive longevity). Not new by any means but still far far faster than a HDD.
http://www.anandtech.com/show/6824/i...d-architecture
Another article where they compare the various Intel drives in a server environment:
http://www.anandtech.com/show/5518/a...-of-intel-ssds
I think the # of writes in a situation you are describing is going to be relatively low so any modern quality SSD should be ok, but sticking with Intel wouldn't be a bad idea.
I think the server provider we use at the company I work for uses Intel SSDs, but commodity ones (520's or something), but they also keep a close eye on them and replace them whenever they wear out.
EDIT: Actually they use Intel for some, but they also use Samsung 830's.
http://steadfast.net/blog/index.php/...msung-830-ssds
You sure it's being limited by drive speed?