Any Fleetwood towable should now be available at rock bottom prices - and probably will not hold their value long. Your track record of 4 TTs in 7 years is not good - esp if you bought new rigs. I am not sure what you found wrong with the other 4 - but I hope you now have your act together and can find a unit that suits your style.
As pointed out - units with rear kitchens do tend to bounce the stuff in the cupboards more than a side kitchen. As for build quality, I have seen both good and ugly from Fleetwood - you really have to carefully look over the unit you are buying - Look in every nook and cranny - look for signs of water leakage - look inside the cabinets on the floor and see if you can see any light from outdoors. These are just a few of the things I have found on new units on the lot.
Again it is hard to advise you on floorplans without knowing what you liked and disliked on your previous TTs.
To match your Toyota's WB I would limit your overall length to something less than 26' - as long as the weight is OK. One quick test I use for checking WTs is to find the GCWR of the truck and subtract the GVWR of the truck from it - what remains is the GVWR of you TT. There are exceptions, but this keeps the numbers honest.
07 Chevy 2500HD 6.0L ,6 speed auto, 4x4, Blue Granite Metalic
05 Arctic Fox 22H