Aircorps is fantastic for for Mustang alone, but there are many more planes in the fighters collection, and more being added slowly but surely. Not just blueprints, but parts guides and manuals of all sorts as well. I love browsing it!
As far as print quality, most of the stuff you see here is abs that has been sanded, vapor bathed, or both. They don't look so smooth right off the machine.
I am looking to eventually sell the grips when I've streamlined the production, but that doesn't mean I won't release STLs as well. I've got the rudders and grip about done, then it will be time to start on the throttle. A few grips I'm working on are strictly for free STLs, but those are a ways off.
Thanks for the kind words