Where to start? Bear in mind that my purchase was 8 years ago, and that I've not really kept up with all the changes Mark's made. I've been really happy with mine, and most of the changes I'd suggest are 'detail'.
Price: I got about 10-15% off list, but that was buying at the factory from Dave before they had dealers, under the old pricing. I basically got a loaded, all options chassis & coach for the base price.
You'll have to decide among Dodge, Ford, or Chevy, cab length & trim, and diesel or gas. If diesel, you'll have an LP Onan. I'm happy with my std cab Chevy gasser:

Detail changes I'd make, allowing for what I know has already been changed by the factory: Move the generator start panel into the cab access opening where it's reachable when driving (assumes std cab) so the Onan can be warmed up before you park. This would let you start the A/C immediately when you stopped; good if you travel with pets. Move the heat thermostat to where it's reachable from the overcab bunk, or get one with a remote. I'm pretty sure they've added more AC & 12V outlets already. I specified a MaxxFan 5100K instead of a Fantastic Fan for the overcab bunk vent; I'd add a powered vent for the shower. I'd get the roof painted, if they don't now. waxing the gelcoat 1-2X/year is a chore. Delete the 'roof rack' if so equipped. No oven unless you're really going to want baked goods; this gives you a big cabinet.
Big change: I'd try to get the CX fiberglass top put on the taller TX body; dunno if it's possible but think so. This would let you have the larger thermopane awning windows of the TX in the main area, but give you the slide-open windows in the overcab bunk ( AIUI, TX's do not open there). The awning effect of the TX windows give you needed ventilation in the rain when parked; the bunk sliders give you good ventilation at night. And this combo would give you more overhead room in the bunk, I think.
If I think of more, I'll post again.
Jim, "Ancient orators tended to Babyl-on."