Hello George,
I have been using EA Studio and FSB PRO for six months. It is difficult to recommend one of the two because they are different programs. Both Strategy builders but they generate different strategies.
EA Studio works on the bar opening while FSB PRO can open the position inside the bar.
Also, EA Studio has a Reactor which is very useful to create robust and simple strategies. While FSB PRO has the option to create complex strategies with multiple time frames.
So it is up to you what type of Experts you want to use. If you can effort them both, you will be able to create a very nice portfolio of different strategies.
Cheers!