Pros: FAST!!! High IOPS...higher than Crucial M4. Faster write speed than Crucial M4. 5-year warranty. True Speed technology + TRIM = MUCH longer speed degradation.
512 mb DDR3 Buffer cache!
Has Marvel 9174 controller, which is better than SandForce.

Cons: Expensive! Other than that, None!

Other Thoughts: Plextor M3S, Crucial M4, and intel 510 are pretty much the best right now.

Pros: It makes application loading fast. I admit it.
But I can't get any SSD speed in ANY benchmarks applications (HD Tune, HD Tune Pro, CrystalDiskMark, ATTO Benchmark)
Windows 7 loading time is fast.

Cons: My 1st HDDBOOST failed. My PC couldn't detect it whatsoever.
And sometimes upon turning on the system, system checkdisk will run automatically and detect some problems and correct them.
I think whenever system can't detect HDDBOOST, it'll break some parts of your regular HDD.

I requested a replacement, and now my 2nd HDDBOOST is also acting the same thing. System cannot detect it.

Updating the firmware is also a headache. I can't update the firmware AT ALL. It always fails. It'll say something like "writing error" or "SPI erase fails." and always like that.

I'm returning this back and never use it again. Not good for your HDD!!!

Other Thoughts: NONE