not a current owner but doing homework into a PT unit---a Sanibel 3701 (and considered a 3901).
Yesterday we went to Lexington to look at both and they do show well.
The 3701 has a really nice layout, big basement-only negative was bed space on closet side is less than what we want.
Eliminated the 3901 based on a number of features.
Thought I had found the next unit -- then this am I found this thread.
A few owners with really big set of problems. Scary.
I have seen this same type of list in another manufacturer and it seems like the lemons (built on Friday pm by the group ready to leave work---throw it together) and then wonder how it got through inspections they brag about.
Sorry to say I will look elsewhere now, can't afford to buy one and then have it at the dealer for repairs that should never be needed, frequently.
The below thread is the info that changed my mind.
Granted there are many satisfied owners out there but a few major problems like this can surely be avoided.