Texas also offers a Class A non-commercial license. In Texas, the requirements to get the license are the same as for the commercial Class A, except for the cost. Non-commerical saves $36 over a 6 year license period if I remember correctly. For $6/year difference, I went with the commercial version.
There's quite a bit of confusion about what's required, including at the TX DPS. The documents are written in an ambiguous and confusing way that makes it seem that a combined gross weight RATING >26,000 requires a Class A (commercial or non-commercial) license. I asked at DPS and got several different answers - all of which said the law required more than a standard license. Interestingly, the actual Texas Statute clearly exempts RVs towed for personal use. But I don't expect that explaining the statute to a law officer would get me very far.
I noticed on the ChangingGears table that several states seem to require a Class A for larger/heavier rigs, including California.
I've also read many postings on this forum on this subject. The gist of them is that the only person actually getting stopped/ticketed for not having Class A license is "the friend of a friend I heard about" (implying that no one is actually getting stopped) - except maybe in California.
Btw, there's a guy in Austin who helps people get their Class A CDL for $1000, which includes using his truck for training and for the test. I used his service and noticed he had other students from out of state because of much higher costs in their home states. One of the guys was from California. He drove to Austin, stayed in a motel and practiced for a couple of days, passed the test and went home with the Texas license, which he used to obtain the California license. He said it was way easier and less expensive than doing it in California.
http://austincdlservices.com/