Samsung !, Samsung !, Samsung !
These are pretty much the standard for cheap lasers
They can fairly easly be refilled with toner - can be a bit messy
You'll get about 1000-1200 pages out of the toner/drum which comes with it before need refilling. ( I did on 16ppm one)
(edit:user reviews on ebuyer, seem to indicate less than this on 22ppm one)
Have a 16ppm at home, bought the later one 22ppm for son at uni ( at same price as 16ppm)
usually about £49
or £42 + del -
here
so around 4p per page even if you bought a new printer each time it runs out ! - a lot less then ink jet ( unless using refilled carts)