We drove our 2910 from south east PA to south west FL this week pulling a 16' enclosed trailer. I really like the way the cruiser handles it rolls down the road so nice. If I had to choose between our Subaru Outback and Cruiser to drive long distance I'd opt for the cruiser, it drives that nice!
The only suspension modifications we made were the KONI FSD shocks and rear Firestone air bags. Also we asked Phoenix Cruiser to have the front end aligned before we took delivery.
As for the Air Bags, when we got home to PA after taking delivery of our coach in March I noticed the drivers side rear was close to two inches lower than the passenger side. When I spoke to Earl about it he told me that they did not think the drivers side would need extra spacers because of eliminating the extra slide.
The Air Bags were a good way to level the rear end. I had them on our Born Free's and like the ability to adjust the bags dependent upon our needs.
As to the point raised of the longer coach driving well.....I agree........I won't tell you how many stops we made on our way to Florida.....besides Cracker Barrel and Fuel stops

............Let's just say I could drive and drive and drive

Dave