What is your purpose of switching?  What are you looking for that ProSeries does not have?

Each software has its pros and cons, so if you can determine what you don't like in ProSeries, that may be able to help you figure out what software you DO want.

Although I like ProSeries, I hate Intuit.  So for me, if I had to deal with a big "learning curve" for new software, I would never use another Intuit product.  But your needs and why you want to switch software may be different than mine.