Just posted is my review of the 256GB Crucial M225 solid state drive (SSD).
It’s a screaming-fast unit, useful in a variety of scenarios. Laptop users especially might be favorably inclined for the ultra-high performance as well as the increased reliability and completely silent operation.
See also my comments on external solid state drives. External drives won’t achieve the performance possible internal to a Mac Pro or MacBook Pro, but will still be speedy.