I would definitely stay away from Real Flight Basic
(I started a thread - well, actually two...- about this in the KnifeEdge forum)
The software is ok and does everything it is expected to do, but as far as I am concerned the dedicated controllers they sell with the Basic are jut plain crap. I had two of them go out of order in the span of one year, the first one less than two months after I bought it, and still covered by the warranty, on the RH stick, the second one about 9 months after I got the replacement (November 2011), on the LH stick
Both controllers were well cared for, used on a fixed place, and I am the only user.
As is usually the case, you get what you pay for...