My impression with GHS Pressurewounds was similar to jaywa's. When playing them the first time they seemed rougher and brighter than I expected, but in a short time they became the compromise between flats and rounds I wanted.
Agreed. I tried various half-round strings over the years and never liked any of them until I tried Ken Smith Compressors, which are basically GHS Pressurewounds, and they are the only ones that provided the compromise between rounds and flats that I was looking for. Great strings.