some early brothers was rebadged HPs - anyway, its prob best to work out how much printing you do & price up the consumables & check the price against the page usage,
as one may be £20 but only print 1000 pages, compared to another being £50 & printing 4000 pages - also a page is based on 5% coverage, so if your printing CD covers
or photos, then divide that by 20!
If your printing thousands, then also price up the transfer belt & fuser. Also, some printers use seperate toners & drums - again its worth checking, oh & there's oil!!!!
what you save in initial outlay, can easily cost you a lot lot more. Also, look at the Pages per minute. Some Colour Lasers can take an age to warm up.
I like HP as they usually workhorses & have long life in the maintainance parts, but Ive never really came across any problematic colour lasers. I hate working on lexmark ones though!
Xerox toners are expensive.
an example for cost can be found here on a review for the brother :-
http://www.trustedreviews.com/Brother-HL-4040CN_Printer_review_print-speeds-and-running-costs_Page-4more than 8p a colour page - based on 5% coverage - £1.60 on if you done a full a4 page of colour!