I had a Dave Brown sym with windows 3.1 which I was very happy with. However, it won't work with newer operating systems, so I bought his new one. The old one had many more models to fly and had very good graphics, considering it was over 10 years ago and a DOS based program. I prefered it to the new one by a whole lot. However, as someone else has said, the real bang for the buck is the FMS sym. I'm sure the big buck syms are superior, but the FMS is free with some purchases and the deluxe @ about $50.00 bucks has tons of models to chose from and works really well, I don't think it can be beat.