I was a bit suspicious of MHS because, as you said, the sale was almost hassle free. I've been telling myself that the savings might be worth it. We've owned a two Sprinter based RVs since 2006 and knew that at least that part was fairly reliable.
Between the 2K mile drive home and prepping for a two week trip in northern CA that starts today I've been nothing less than astounded at overall poor workmanship/lack of QC IE screws and metal shavings left under the mattress, refer door hits the bathroom door, dirt and hand prints under the trim tape, etc, etc, etc. I'm not hopeful but my mantra continues to be "but I saved $40k"