its been discussed many times in the other thread, but for purposes of WoW players the degradation does not come into play. You should learn how junctioning works, and junction your DATA\ folder(s) to a copy of the DATA\ folder on the SSD drive. That way you only write once to the SSD (once per WoW patch), and all the time you are playing WoW its treated as a read-only device.

Having said that I have the v1 OCZ and achieve 120 MB/s read speeds. OTOH it has improved my wow perf a little bit, but not dramatically - I am more CPU/GPU bound with a c2duo 2.6ghz and 8800GT under XP.