If Tiger Motorhomes models were not just insanely expensive, I'd probably recommend that. However, they priced themselves out of the market for almost everyone. Phoenix Cruiser is more expensive than an average motorhome, but you definitely get your money's worth.
Another plus about Phoenix Cruiser is that you can get the chassis upfitted with Quigley 4WD, so if you have to take it off-road, you can.
As for the cabover, if given a choice, I'd go for it. As stated above, the fuel economy lost is negligible, and you gain a good amount of storage space, not to mention a sleeping surface in a pinch. The storage space is perfect for extra blankets you want to carry around if the weather gets cold, but don't want taking up space on the bed.