X2 what Dan, Oak & Iowa said.
Dan's point especially: your TV will dictate your rig.
If you allow me to assume you can upgrade both the TV & Rig, take a look at the Rockwood 8289WS Diamond Package for starters.
Given that you beef up your F150 upgrade you can pull the 8289WS nicely. For us, the 8289 is plenty large enough for retirement and long trips. We do not plan to full time, but 1/2 time is certainly within the realm of possibility. Our only niggle with the 8289 is the bedroom is a tad on the small size, but it has a Queen bed - same as home - and we have been good friends for 35 years now anyways
If you do upgrade your TV, however, I suggest you build the TV around the rig you like best!
As for other brands, we did a lot of research back in the early 2000's when we moved up from a (Coleman) Pop-up to a TT. No matter what we looked at, or folks we talked to at campgrounds, or rigs we checked out at RV shows/dealers, Forest River always seemed to come out on top in every category of RV save the ultra luxury coaches ($500K+) (although Berkshire Class As are AWESOME rigs at 1/2 that price!)
Next time you are camping just do a informal survey and count the different brands - my unscientific observations indicate mostly FR with Coachman & Winnibego 2nd neck & neck. Oh, and Airstream - but the AS crowd are sorta like the Macintosh Computer Fanatics of the 80's
(they ARE good units though)
Oh...another plus for FR? There's this small-time businessman by the name of Warren Buffet bought FR outright in 2005 based on the company's reputation