I have the 26BH.
Here's the 28BHS.
We ended up choosing the 26BH for a few reasons. First the sofa in the 26BH is only 2" shorter but it has velcro arm rests which are pretty comfortable. The sofa in the 28BHS has no arm rests. That wasn't a decision factor but is a difference between them.
We often use the sofa as bed and even the dinette. Plus we use both as sitting areas and they are just on top of each other and cramped. The slide is only a 1/2 slide out so you don't gain the extra walk room that you get with a full slide out. This sofa and dinette arrangement is something that I see in more cramped campers as the 19RD and not a favorite of mine. If it was a full slide out, it may had been better but it was to cramped for my liking.
Plus the TV can't be watched by people on both the sofa and the dinette. The TV is on a swivel arm so the TV can face the Sofa but then it can't be seen by people on the dinette.
With the 26BH, the TV can be see face forward by people on the sofa, on the dinette, and in the front queen bed (a big plus!). Plus the sofa is in it's own area and opens up the floorplan, not feeling as cramped and more home like.
The 28BHS, does have a much larger and open Kitchen but is that really needed?? We cook rather large meals great with the 26BH and don't have any need for a bigger kitchen. To me, the Kitchen wasted a lot of space.
Also the front queen bedroom is more closed off as it has a fuller wall than the 26BH. It's all what you like. We like the more openess of the 26BH front bedroom with it's half wall and curtain. PLUS as stated, we can see our TV from the bed. There is another TV mount in the bedroom for each floorplan but no shelf for a Bluray player. We only watch movies late at night after the kids go to sleep and to watch the news for weather.
The other is that since it has a slide, it's more maintanence and debris could get on top of the slide and rip the slide out seal as it's brought in. To combat that, you'd need a slide out awning which is more expense. Then the worry about the slide having problems. I feel if you can avoid a slide, then do it.
The other thing the trailer was another 2' long. At the 26BH's 29', it's already a bear to get into my driveway with a narrow street. The longer trailer would even be that more trouble.
That's why I chose the 26BH. However that's my preference and you may find better likes with the 28BHS.
2019 Ford F150 XLT Sport, CC, 4WD, 145" WB, 3.5L Ecoboost, 10 speed, 3.55 9.75" Locking Axle, Max Tow, 1831# Payload, 10700# Tow Rating, pulling a
2020 Rockwood Premier 2716g, with a 14' box.
Previous 2012 Jayco Jay Flight 26BH.