Can't speak to repairs, but for other service work we found (a few years ago) the CW at the south side of town to be much friendlier and willing to work without a long wait for an appointment than the one at the north side of town. Since both show "collision center", there's probably just one they both use. I'd be more inclined to patronize someplace else that specializes in RV repair. Unfortunately, CW doesn't inspire much confidence. That said, somebody who's actually had collision work done would have a better opinion.
Might also want to check
RV Service Reviews - there are 10 RV service shops listed in the Myrtle Beach area. Might get some insight from those reviews.
al
Fulltiming since Apr 2007 in 2000 Rexhall Aerbus, towing 2012 Honda CRV. 47 of the lower 48 so far.