I drove my Father-in-Law's Class A pretty extensively years ago, but I now own a Class C. I won't try to compare a much older A unit to a newer C unit, but in general, the C drives much easier for me and I'm not as fatigued after driving longer hours in the C. Having said that, I encourage you to visit a large RV show, and check out the various RVs and compare/contrast the factors that matter most to you.
My personal factors were: the C had truck doors to exit the unit in addition to the coach door, the C has airbags for protection, the C could sleep more people, the C can more easily fit in smaller campgrounds and parking spots, the chassis component can be serviced in many more locals with common parts readily available, the cost of service is generally less expensive, and our 27 footer can easily handle the 2 of us and our 2 adult children and our stuff with plenty of OCCC left over. Our longest trip so far has been a five week transcontinental journey, and we did not feel we needed more RV or a tow vehicle.
A point about OCCC. We spent a lot of time at RV shows before making our purchase. Some find the following hard to believe, but it is true. We checked out some Class A units that would have been overloaded with only the four members of our family on board. Not making this up. So, one cannot generalize that a Class A will have more OCCC than a Class C. You need to check out each RV yourself and make sure it will safely carry your family and your stuff. Our 27 Class C has approx. 2900 pounds of OCCC, more than ample for our needs. BTW, I had our RV four corner weighed at an FMCA rally to make sure we were safe.
Good luck on your search.