Pros: Unfortunately, I bought mine over a month ago, before NewEgg had them in inventory. In my 12 years of building and repairing computers, I have never experienced having a single component change make such a noticable difference in performance in my machine. Every app, every page load, every game open in a fraction of the time with my previous drives. As you know, any system is limited by the slowest data bottleneck and for years that has been rotational hardrives. I've had raided raptors, WD 640s, etc... in the quest for disk access and none have been much of a change until the X25-M. Vista64 boots about a third faster and once loaded, there doesn't appear to be a single bottleneck in my system any longer. The only thing I've tweaked is turning off automatic defrag since these don't need it. The lack of noise and heat is another bonus! It truely has released the beast in my system! Awesome! just Awesome!
Cons: Price, size and that i only have one! But I've been a good boy this year and Santa is on his way...
Other Thoughts: System specs- Q6600@3.4, 4gb PC1100 ram, Asus P5Q Pro, Nvidia 8800GT. WD 640 for storage. I briefly tried it in my notebood and the same applies! Huge performance increase!