I've been thinking about buying one (used) off of Ebay or some such, as I've seen a bunch of estimating software advertised (and I've seen the thread about NEC for PDA here).

Anybody use one? What (electrical) programs do you use. How do you like it? Problems / praises?

I'm not using any estimating software currently, but obviously, I'm willing to change. Manual take offs bite!

Thanks in advance.