RightMark CPU Clock Utility vs. Notebook Hardware Control

[Wolfcastle]

I've been fiddling around with the Notebook Hardware Control to control my Core Duo's voltages, and so far it's really great.

I also have RightMark and am thinking about playing around with that, but experimenting with NHC took me a long time, and I'm not sure I want to fix what I don't perceive to be broken.

Anybody have any insight about which they prefer and why? Thanks.