CUE vs Unity Connection — When to use which?

One of the most common questions I get is about the difference between Cisco Unity Express (CUE) and Unity Connection. Here is a quick overview:nn**CUE** — Runs on the router module, best for small offices (up to ~250 mailboxes). Simpler setup but limited features.nn**Unity Connection** — Standalone server, supports thousands of mailboxes, advanced features like speech-to-text and visual voicemail.nnWhat has been your experience? When do you choose one over the other?