I actually haven't had the chance to use Microscope www.micro2000.com or P.H.D.PCI / Quicktech from Ultra-X www.uxd.com... however, I do strongly believe that any good technician should have some sort of hardware/software diagnostic tool in their toolkit... since I cannot afford either Microscope or Ultra-X's tools, I'm using Tufftest www.tufftest.com. However, like all the other good techies, I'm just using it to test ram and do low level formatting of the drives... it's not that powerful but it does work.