Consider how you want to RV or full-time. If you want to wander around most anywhere without planning or do not want to be impeded by size, the class c is your bet. If you don't mind being forced to stick to the more major roads and don't mind limits (height, weight, length) on where you can park/go then get a 45 footer. You implied sticking with a MH, but a trailer offers another set of possibilities. Having spent 3yrs with a 24' class c and now experimenting with the opposite extreme in a monster class a, I find they are both equally worthy lifestyles for very differing reasons. Class c's will have fewer road/access limits than an equivalent class a (c's tend to have more road clearance) and a class c tends to be less tall - height is a huge issue/concern in free spirited mobility. But then again, the space and appointments of a class a or darn right nice even if you can't get it into the places you want to visit.

I'd suggest continuing your experiment and try to imagine what aspects of this lifestyle are most important to you. Then pick the rig to match your desires and those desire may change in time.

As for me? I'll most likely be back in a 24 footer in a couple years as I am much more of the unplanned wanderer who likes to get right into everyplace I want to go. But then again, my current rolling barn-sized dance hall is a real blast – at least for now.

We went throught this same problem 10 months ago.  Our 1st decision was do we get a 5er or a MH.  We decided on the MH.  We spent months looking at MH's for sale on the internet from Maine to Fl.  Knowing what we wanted and what we did not like.  We had about 30 picked out and since we could not see all of whem we knocked down that list to 10. On a day that we had appointments to see two, we looked at them.  We also stopped at a somewhat local dealer and the second one he showed us we knew was for us.  What I am trying to say is, when you see the right one after some logical decisions you will have your new home.  Good luck and happy fulltiming 

There are many people happily full-timing in Class C's and other smaller RVs. It really is an individual decision. (I am waiting for Jim or Chris to step in sometime but I think they are busy at the FMCA Convention). Better fuel economy, more choices in campsites, being a narrow-body, and cheaper maintenance (hopefully) are advantages for most Class C's.

Your Class C has a big advantage right now, it is yours and if you are thinking of keeping it then you must find it works for you now. It will also force you to downsize more than a big Class A.

You can rent a small storage unit, say 5'x5' to store the stuff you "might" use in a bigger rig. In a more rural area such a storage unit will run about $40/month. That gives you time to try out the full-time lifestyle and lets you realize if the Class C will continue to work or if you need something larger. After a few months you will probably wonder why you are storing some of what you thought so important when you started.

We started full-timing with our 35' gas motorhome and moved to a 40' diesel motorhome later. We found that we needed to be under about 32 or 33 feet to really have more choices, most places we fit as a 35' motorhome we also fit as a 40'.

I also recommend getting the materials from RV Consumers Group as Donna recommended. The books you get with the DVD are very informative on buying an RV.