I'm two years into ownership of 2013 390RB-60 and I pretty much love it. It is our first (and probably last) MH and we bought it at Lazydays in Tamps. We had an opportunity to look at the Tiffins, Fleetwoods and Winnebagos and do comparisons. We simply gravitated to the Berkshire.
It has had some issues (nothing really major) but I know that would be the case with whatever MH we chose. We are in a RV club and there are a couple of Tiffin owners in it also. They have remarked several times about how nice our MH is and how they really like the way Forest River does things. Sideview mirror location, polished tile floor, wet bay just to name a few. They own a 2009 RED and a 2010 Phaeton. Their MH are nice too but they have just as many issues. The RED is at Red Bay right now having several things corrected on it. Rotted wood in wet bay, lack of proper sealing around firewall, jack issues to name a few.
The price, value, features and appearance of my Berkshire can't be matched... not by any of the others. And you don't see alot of them back at the factory. If you do need to return for some repairs they are great people to deal with, as are the folks in the parts dept.
2013 Berkshire 390RB-60
toad - 2002 Jeep Wrangler Sport