teamwally: WELCOME to iRV2.com
You have come to the right place for RV info. Please allow me to answer your questions, as a Newmar owner and Workhorse fanatic.
The early W-22 chassis were the best thing available to Newmar at the time, and the MACA coaches built back then were really nice, but HEAVY. Depending on model, some had very little CCC, before your stuff was added. Then WCC came out with the W-24 and the MACA was a better fit for it. For a couple of years (06-07, I think) Newmar used the W-25.5 which should have offerred even better CCC, but then the coaches were increased to 39 feet, so the net gain may not have been much. For 2008+ there is no MACA, however its replacement "Grand Star" is available on the W-24.
IMO, you should avoid a MACA built on the W-22 unless you really don't want to carry much. ANY of the W-24 or W25-5 based coaches should be wonderful. Good luck with your search, and thanks for joining us here on iRV2.com. ED