You can get the Lippert Level Up 6 way leveling system on Dutchmen. My 2014 Dutchmen Infinity 3210RE came with it. We had a 1999 New Vision Ultra 3452PX3, 36' ext length. Bought it new in '99 and loved it. After my bilateral knee surgery, my wife thought I was getting too old to do the manual set up, and so, we started looking. Pricing is pretty good. Got it from Best RV, but I also saw that Camping World carries the same model.
I love the Level Up System. It is truly push button leveling. Take a look at the video on the Lippert (the manufacturer) Website, www.lci1.com. You literally push a couple of buttons to unhitch, then level. Best of all, when you recouple, push a button, and the system raises the fifth wheel to hitching height. How cool is that? (I am in no way affiliated with Lippert. I'm just an old guy who found a great product.)
As far as space is concerned, it's got it. Just like you, we were afraid of loosing the living room space that our New Vision had. Exterior length by measurement on the Dutchmen is 35' 5". Looks like we gave up 5", but we still have the room for all our Motorhome RVing friends to congregate in this fiver like they did in the New Vision. Take a look, you might like it. (I'm also not employed by Dutchmen. We owned a couple back in the early 90's and they were very good units) Hope that helps.