We stayed in Sevierville a few years ago, and are going back to Pigeon Forge this summer in July. We chose PF because we plan on getting a season pass to Dollywood, and PF is close to that. We have not done any of the other touristy things in PF, but there is a lot of traffic there. I think Gatlinburg would be my first choice of where to stay, but while we have young kids who want to go to amusment parks, we'll do PF. We're not a very "naturey" family. LOL
However, I did look into A LOT of cabins on VRBO.com - in PF, Gburg and Sville. I found the prices varied a lot just by what the owner wanted to offer, so look around and ask a lot of questions. We found rates all over the place, and then had one standout property that offered all the amenities we wanted in a price that was very attractive.
Also, when looking for a cabin, look for fewer bedrooms than you think you may need. Most cabins have a loft area which serves are another private sleeping space. We normally would want at least 2 bedrooms, but found a 1 bedroom plus loft that will be more than adequate for us. Keeps the price a little lower too.
Good lcuk finding something - there are a lot of choices!