The amount of printing you seem to be doing, stay with an laser printer. Inkjets cost too much even if reasonable the overall cost of inks makes it impractical for constant printing, take my word on that.

Getting away from basic laser printers you'll find many do handle large size media like A3, just check thier specs to be sure. I found Minolta, HP and Okidata offer some good choices. Further, if you like color, color lasers are affordable compared to several yrs. ago., so don't discount them. As color output, its more acceptable in cost than any inkjets. Even, the basic b&w laser are real cost effective, many in the under $200 range.

tada -----Willy Happy