I don't know those makes except for KZ. One thing I would suggest looking into is the quality of dealer service if you're travelling around.. Odds are you will need to get into a dealer a number of times while on the road.
I don't know much about the typical dealer quality for a particular brand, but I do believe that KZ has a generally good reputation for dealer service. I know ours has been excellent and fast. Some dealers can take forever and are not great at diagnosing and fixing things. Our last dealer took well over a month on two occasions and it took 3 trips into them just to fix a faulty bathroom door.
KZ has a 2 year warranty so if you can't get to dealing with some warranty issues during the first year, you've got another year. Jayco also has 2 years. Some manufacturers can be more difficult to deal with. Sometimes if you have a frame related issue, they simply refer you to Lippert to duke it out with on your own. You don't want that on a long road trip. Some of them are great. Research the forums...
I would suggest trying to get one with the best quality and durability if you're planning on a lot of miles. Two brands that are better are Outdoors RV and Northwood. For example: Creekside 23BHS http://www.outdoorsrvmfg.com/images/...ekSide-Web.pdf
Note the greater counter space. They both make their own HD frames too. Even if you don't see a suitable floor plan and they are a little too costly, at least it would give you a reference point. I'd look closely at the frames on a TT. Some are inherently weaker than others. Personally, I'd get something with a large rear window. TT windows are often small and low down making them seem dark and claustrophobic. It's really nice to camp and gaze out the back to a nice view. But that probably precludes a BH arrangement.
If you have not used a TT much before, when shopping for a new one, functionality is easily overlooked. I'd go to an RV show and sit down in them for a bit and imagine yourself doing things such as: Is the TV location okay? Is there adequate storage space and is it easily accessible? What's the kitchen counter space like? Just a few more inches of counter space can make a big difference. I'd look for an 8 cu. ft. fridge if available. If you can find a short enough unit, I'd opt for something with a sofa.
I'd be careful on anything that is "ultra-lite". Since you plan on a lot of mileage, these units are less durable and less substantial in order to save weight and are likely to have more issues and a lower lifespan.