They are awesome and because they use FSUIPC so they work with any plane where as the stock drivers only work well the with planes that are setup like the stock planes.
With the spad drivers they take on a whole new life and respond so much better. Plus you can program it to some extent I believe. I've not had to so can't say how advanced they are for that.
There are drivers for xplane but I don't own that sim so can't say how well it works. Again they are third party so not Saitek supplied
