looking at full timing for a while considering coleman

We are, and I dont mind spending more but size, floorplan both appeal as does the tank sizes.
I have seen other 2 slide models with the same floorplan but tanks are much smaller. Coleman makes this with fiberglass sides, but again the tanks shrink. If anyone knows of another brand with matching size and capacities I'd appreciate a point in their direction.
I am fairly handy, dont mind some maintenance but was wondering if anyone had tried one of these long term.