I've got them too - congrats! I really haven't put in enough time with them. I think my next step is to install the latest OS - you can find a discussion of it
here. And of course check out the other threads over there.
Some of the things I encountered were: adjusting the tuning of the presets, saving presets that I liked for performance, actually I think that's all I've really done!
I've got some recordings that I've done but will have to post them later.