Centos – Which FileSystem is best for CentOS 5 on SSD

I would suggest that SSDs are not good for a swap partition because their performance degrades over time with a large number or writes. This has to do with the fact that SSDs have a limited lifetime of writes, and therefore all kinds of tricks are played to minimize the number of times a single sector is rewritten.

10,000 insertion/removal cycles means 10,000 times the drives whole capacity? Meaning I can have write activity over 20 TB - right?

Fairly accurate. There are a couple caveats to this, but the biggest one is eliminated by this quote from the spec sheet:

Support Wear-Leveling to extend product life

I'm interpreting that as the controller implementing wear leveling, as opposed to merely permitting it (which really anything does). If that interpretation is incorrect, YMMV.

All that said, it's not clear why you'd select this over a more standard 2.5" or 1.8" consumer-type SSD. Given that you'll spend the difference between this and a such a drive in just an hour or two of remote work, is it really worth it? 1.8" drives, in particular, are bloody tiny, and can be stashed nearly anywhere in a system, or even affixed to the case itself with a bit of work and some small sheet metal screws, since vibration doesn't bother them.

Writing logs externally is generally a good idea, anyway, but if you don't choose to do so, so long as the controller here implements decent wear-leveling, you'll be fine.

One last note: USB 2.0, as an interface, is actually quite a bit faster than PATA (480 vs. a bit over 100 Mbit/s). Some or all of that difference goes away due to other issues, but I certainly wouldn't discount USB offhandedly if you're determined to go this particular route.