I've been lookin' and thinkin' 'bout the QB-7X guns. The QB-78, 78D and the 78car look interesting. I think I have a good idea what the differences are, but y'all tell me just so I'm sure. Is it worth the extra $20 for the deluxe? Who has the best deal (and service) on these guns. I'm not looking for a tuned or modded gun, I can do that myself. Archer and Compassco are the only place I've seen 'em for sale, are there others? Thanks!