We just bought a Class C Forester 3011DS. 2018 year model. It has the Atwood A/C 1500 btu (supposedly with 18000 output).
Pros, Very Quiet, Cools plenty on moderate days
Cons, never turns off because compressor cycles but fans runs all the time unless you turn it off at panel, Several registers (vents) have little or NO airflow coming out of them, No enough on hot days.
No matter what the sales folks tell you, this 32' coach should have 2 a/c option. The most important things to cooling it on a hot day is to start the night before and the never let it get hot again. It can maintain cool but takes a while to actually cool down a hot interior where the furniture, walls, bedding and roof is radiating heat.
Good news is, Forest River reports that one of the Forester coaches will have 2nd A/C option next year. However, it'll still be 30 amp coach. Needs 50amp with 2 A/Cs even if second A/C is only 11,000 btu.