I used the gigastudio convo verb for quite some time, and imho, jconv is a far better result. The audio in jconv is really clean, and the app runs consistently, which builds confidence in working for lengths of time without the stress of collapse, or segfaults..
That wasn't my experience with GCV, quite the contrary. you had to talk sweetly to it, and beat it with a hammer occasionally. Not conducive to good karma for writing and recording.This was across a herd of gigastudio boxes. (5)