Recommend a reliable office printer

[volcs0]

I've been asked to recommend a printer for one of our workrooms (at a hospital).

It will be a "workhorse" printer for printing protocols, labs, etc.

Priorities should be

1. Speed
2. Duplex
3. Reliability

Color is not necessary.

Workload would be 50-500 pages/day (usually closer to 100).

Cost should be $500-$1000.

Suggestions?

Thanks.

sam