I'm a Two River Landing person to answer your "HIGHER END" portion of your request...however that's where the match ends...Two Rivers is an amazing RV park...you PULL INTO your site with your coach and have the river in front of you...however...having a 2 year old would probably scare the bejezous out of me on those sites...
Closer into town...River Plantation is a great suggestion...BUT...I have read/heard/seen that is it darn near impossible to turn ACROSS the road there when trying to leave and make a left hand turn heading into Pigeon Forge...I guess you could always turn right and go to the next location to make a U-turn...
River Plantation has been on our list but never stayed there.
Twin Creek is a fine place but not in Pigeon Forge as it is actually in Gatlinburg...just off the main strip...we've stayed there and the owners are top notch...treated us exceptionally well...trolley stop right at CG...but in Gatlinburg...
There are seemingly countless other choices in that area...but 'HIGHER END' I believe you are limited depending on your definition of 'HIGHER END'...to me...that definition is Two Rivers and River Plantation...but my definition may vary from yours...there are some very nice places in that area none-the-less...so I'm not sure what exactly you are looking for.
It is a great place to visit though...we love the Smokies!!!
Good luck with your search.
Joe.
2007 Tiffin Phaeton 40 QSH 350Cat (3 women and 4 slides...Just RIGHT! :B)
2012 Jeep Liberty Sport (toad)
2005 Ford Excursion V10 w/4.30's (Sold)