Hi Char,
Orcad is a good package, I've been using it for the past 3 years. It took me a little time to get used to it, but it has some nice features. It's also less expensive than Power PCB. However, Power PCB looks like an excellent package...I just saw a demo of it and would love to use it. The cost was higher than the company wanted to pay though.
Good Luck,
Kitty