The Axis is built on an E350 chassis, which is a Ford van chassis that are used in Class 'C' coaches. My personal preference would be the E450 chassis, which is not available.
As far as quality is concerned, I've owned a Thor\Four Winds product since 2007 and I personally don't have any major complaints about quality. The price point is under $70k MSRP, so I wouldn't expect high-end finishes that you would find in a DP.
Just like certain body parts, everyone will have an opinion. So, just keep an open mind with the variety of responses you will get. It's your money, good luck with your decision.