Winnebago 29VE vs Jayco Greyhawk 29W , new

During our maiden trip out west this past July it was hot and the lone A.C. seem to be OK up front but I could not figure out how to direct enough air flow to the bedroom area to make it comfortable. I thought there was something blocking some of the vents so when I got back I took it to the dealership. They figured out the right combo of closed to open vents and I now believe things would be better (I thought I tried all possible combinations but apparently I did not). That said I would still opt for a 2nd A.C. If that were an option but I am not sure that it is. I had a Class C (Itasca Impulse 32ft) prior to getting the 29VE and it too only had one 15,000 BTU A.C which was ducted and I felt that was fine. Like you point out I guess there are things you could do to help if needed but one shouldn't have to in my opinion. Again, if available I would opt for a second A.C. Just to have it if needed....what would it add 1-2 thousand?....worth it when you need it.....my opinion