Personally I use HomeGuage, but if I was going to switch to one of those two, I'd go with Home Inspector Pro. You're going to be spending a LOT of time with your software. Get the best one for you, not the cheapest or most expensive one.
I've seen a lot of inspectors start off with bad software and then have to make the switch a couple years later. Just made life harder on them.
Get it right the first time.
Call their customer support lines and see what kind of responses you get. Tutorials and customer software support is important when you're first learning to use it. Palm