We have a new Axis, and we did buy from Camping World. It's our fifth RV, and I wouldn't say we had any worse experience there than anywhere else. My biggest gripe is that they didn't clean it well at all before we took possession. As far as quality, we have had almost no problems. We had a shower enclosure that gaped from the wall a bit. We fixed it ourselves. We have gone camping twice and tried everything out, and just no issues.
Our last RV was a Fleetwood, and boy did we hear negative things about Fleetwood. I'm glad we ignored them, because we had very good luck with it, trading it only because we now need/want a permanent bed set-up.