We are loving our sterling. Love how spacious it feels because of the light colors.
Our dealer installed an EZ Hitch (see attached photo). Not sure if this is a good set up or not as I have had no previous experience with WD hitches. It is easy to hitch up though. The WD bars just slide in place once you jack up the TV and TT. No chains and is very quiet when turning. The brackets for the bars do interfere slightly with the tank cover, so the cover is now on top of the brackets. Not sure how other WD hitches are, but the brackets do hang low which minimizes my clearance. Pulling out of our warehouse yesterday there is an big dip and I actually scraped the bracket so hard it got pushed back and the WD arm fell out of place. It was a simple fix and the second around time I was a little smarter and went through the dip at an angle, not straight on.
Besides that it tows great. Barely notice it on the freeway.
Let me know if you have any more questions about the Sterling.