A rate of 50 sheets a week doesn't fit very well with your requirement of the last sentence: "I could really use the speed of them."
Good colour laser printers are expensive and if I had a requirement as small as yours claims to be, I certainly wouldn't use one. Cheap colour lasers aren't usually worth the desk space the occupy.
Nearly all our colour printing is done by a number of inkjet printers. B/W printing (general office stuff) is by cheap mono lasers (which are good value).