Eder, which make and model do yo have? What do you like and dislike about it? Would you buy the same model again? We are thinking of a Winnebago, maybe a 33C class A for cross country trips and RV parks, and also a very small 17-20 ft travel trailer for local state parks where a 33-34 footer would be too big to park.
I have an Itasca 42AD with all the trimmings...like this one
http://www.rvguide.com/specs/itasca/class-a/2010/ellipse-reg/42ad/reviews.htmlhttp://www.fmcmagazine.com/back-issues/2010/august/6404-the-2010-itasca-ellipse-42ad
I bought a Winnebago product because they have not gone bankrupt and are great to honor their warrantee.
Although I have had various problems common to new motor homes I would not hesitate to buy one again. It's so nice that even though we returned to our house in Alberta after 6 months of snowbirding we both sleep in the motorhome parked in our driveway. We've been home 2 days now and are ready to head out if it ever stops snowing...
33ft Class A is a great choice for a motor home and will fit nearly any state park (we manage to squeeze into most state parks even though we're 43 ft long 12ft 4 high)
No need to get a diesel unless you intend on more than 15k miles/year I think. There are great deals on used motor homes on the market. (think Kijii or private sales....many owners are old, a spouse dies so the unit goes on the market dirt cheap)
Before you buy bounce ideas off the rv forum regulars, dealers are liars but there's a lot of priceless advice on the net.
Hope that answered you. As you can tell I think the rv life is the best, although we are thinking to add a sailboat to the mix this fall. (yikes I'll need more tools!!)