Color Laser upgrade from HP 3600

Howdy!

I've got an HP Color LaserJet 3600 that has performed admirably for 3+ years. It's now ready for life on the farm, and I was wondering what my fellow spiceheads might be using for 'affordable' workgroup Color Laser printers.

We're hoping for less expensive, larger toner cartridges; one for each color. We're only printing 2500-3000 pages a month on the color printer. We're not brand sensitive, so any brand suggestions is fine.

What are you guys using or recommending these days?

Thanks!