Unfortunately I don't have any first hand knowledge of RealFlight Basic. But, as da Rock
has noted all RC Aircraft is going to fly slightly different. Two well built ARF's of the same model will not fly exactly the same. Making comparison difficult. The higher priced sims allow you to tweak the models so that the flying experience of the sim more closely resembles that of real life. RealFlight Basic unfortunately doesn't have this feature. So, with Basic you get what you get. Is the flying experience of Basic better then that of other sims, more realistic? That's something that only the individual user can decide. Personally, I've found that I've had to "tweak" virtually all of the models in RealFlight to obtain the flying dynamics of my real life models. Other modelers have said the same. The KnifeEdge website is full of AV's (aircraft variants) that were created by other users to more closely replicate the flying dynamics of thier particular model.
ORIGINAL: da Rock
When Real Flight first hit, it took some abuse about how easy the sim planes were to land. They weren't realistic. That's been fixed. Lots of experienced modelers tested most of the popular sims. They had a part in making most of them fly right. Their opinions testify today with their continued purchasing. Way more than just beginners are buying the expansion packs. The numbers wouldn't be there if the models didn't fly pretty close to realistic.
I disagree here with da Rock
. Although the landing characteristics have been improved they still exibit some non-realistic tendancies. I agree that it's it not just beginners who buy the Expansion Packs (which by the way are not compatible with RealFlight Basic). After all they're designed for more advanced modelers, to add additional models to your hangar as you accumulate them. RealFlight, GreatPlanes, KnifeEdge Software and Hobbico are all privately held companies. They do not release sales figures. To indicate that continued purchases testify to the opinions of "experienced modelers" is an unsubstantiated and misleading statement since there is no way of knowing how well any one particular product is selling ... especially when it comes to any product from the Hobbico line of companies. Hobbico is very tight about any information it shares with the public.
Of course if da Rock
has documented information indicating sales figures for RealFlight in comparison to other sims I would be very interested in seeing them.