which color laser should I get?

I am in the market for new color laser printer. I was hoping someone could recommend which one I should get. Here are the requirements:

Full duplex(prints on both sides), Ethernet jack for networking, perhaps two slots for paper, one for junk paper and one for nice one. I want this printer to last forever. I like to hold on to my electronics for a long time. Lastly, there has to be a firmware hack available to reset the toner cartridges so I can refill them with bulk toner. Print quality and speed or not important to me.

Thank you for your suggestions

 

Oki 3641

 

How many prints per month will you run?