I’ve been using Busy for years, and is one of the most polished updates yet. If you’re on the fence about downloading it, here’s my honest take after two weeks of heavy use.
A Rock-Solid Upgrade – Busy 21 Rel 7.2 Delivers Speed and Stability
Power users, IT pros, media archivists. Not for: Casual users who only download occasional PDFs (your browser is probably enough).