RANT is really really good for getting you to understand the concepts of what you're doing without concentrating on flying the plane.
In my early IMC training when I'd struggled with NDB holds and approaches I'd come back and use RANT with the same winds and the same tracks I'd flown and it really helped understand what went wrong and more importantly why.
I'd suggest that even if you do get something else, that you really should consider RANT. Demo available from
http://www.oddsoft.com/
Derek...