I personally used bet angel professional and paid the subscription when i was giving it a go properly.
I found it great although my trading didnt take off.
is it the best on the market?
Only used bet trader pro myself, and while i'm a total novice I do find it very easy to do what I want to do... At some point I will give Bet Angel a crack, but go keep up the BTP for the trading challenge at least!
Check out this thread:
The pros and cons of each have been pretty much argued out.
Personally i prefer Bet Angel, but i haven't had much experience with Bet Trader Pro and will be converting to it for the trading challenge.