That was Camper's Barn before CW bought it and they were always great folks there, so if they kept the same team I'm not surprised. Sorry to hear that about Grand Am, of course we haven't dealt with them in 7 yrs, so who knows what changed.
Regarding Sunnybrook, our last TT was a 2002 Sunnybrook 3310 4-bunk model. At the time, Sunnybrook was known for their top quality aluminum frame and fiberglas skin construction. Best trailer made at the time, right up there with Nash and Arctic Fox products. Quality went downhill in mid-2000's, they introduced their first line of tin-sided TT's, the Sunset Creek brand. Sunnybrook wasn't even on our short list when we bought the Terry in 2007.
The Sunnybrook facility was bought by Winnebago and they making trailers in the old SB plant under the Winnebago brand.
If you are shopping for a Sunnybrook, anything before 2005 should still be in good shape.