If there are any near you, I recommend going to an RV show. That's what we did when we wanted to get back into RVing after a number of years of tent camping. You will be able to see pretty much everything that's available, and show prices are usually deeply discounted.
The other thing I recommend is looking for a decent used pickup truck for the tow vehicle. We got a 2-year-old Sierra half-ton crew cab for less than half the cost of a new one. Others here may disagree, but I'd stick to a 2WD. They are considerably cheaper and get better mileage than a 4WD. We test drove several trucks before buying, and the GMCs have a much more "civilized" ride than, say, a Ford F-150.
