Welcome...and you've found a great forum on class Bs. As mentioned, class Cs are viable too. A big diesel pusher class A I don't think would be a good idea unless you had some previous RV experience.
I at first wanted a Lazy Daze class C. They really are the best in class and have an incredible cult-like following. Check out their forum.
I became turned off to a class C because of terrible gas mileage, harder to drive around towns, and not nearly as stealthy.
It's just me and my dog atm though so a class B is perfect. I can park it in my driveway without ticking off my neighbors and it could actually become a daily driver! I would think for a couple it's great also. For a family is pushing it unless you all REALLY get along.
Of course, there are trade-offs and YMMV.