Enabled write-caching (first checkbox only), rebooted 6 times, wrote 100GB of random data, and rebooted again. Looks like a few small changes in performance in both directions, will probably keep it enabled though.

2R0 Vertex 2 50GB, FW 1.10, RST 9.6.0, write caching enabled, 32kb stripe

Boot drive and steady state (been in use for a couple months now)