I've been using Programmer Studio for a little over six months and the only editor I've ever used for the HP3000 that even came close to it was SpeedEdit. LAN, WAN and Dial-up access have not been a problem. Whisper's customer support is some of the best I've encountered. They listen and respond very quickly.
It is, however, an IDE editor not a version control system. We use VCS3000 for version control and check-in/check-out, but since Igor sold Diamond Optimum the support for VCS has been almost nonexistent.