If you want low priced cartridges, do not look at laser. Their cost per page is usually higher than a good quality inkjet.
Do you need laser? If so why.
Most lasers I know do not go straight through, but curve at some point in the process. Plus the quality on the low end Color Lasers is not as good as the mid-range inkjets from what I have seen.
I would look at the Canon Pixma iP4300 or 4500, or the HP Officejet Pro K550 or K5400 series, if you wanted to look at the inkjets. The Canon's have duplexing and very good quality. Decent priced cartridges as well. In fact some places like oinkinkstore.com and inkjetcompany.com are claiming to have some remanufactured cartridges coming soon. The HP OJ Pro also has duplexing (the next model up) and very low cost per page.
Any other reasons you wanted a laser?
I would like to upgrade to a color laser printer for two specific reasons.
1. brochures, two sided, card stock (business card, not sure if that is the same)
2. Stickers, yes, I print a lot of stickers, fairly customized, it is part of my business plan. When I say a lot, I mean 30-40 sheets month, so Kinkos is too expensive for me, and I don't have the volume for a print shop. These are Avery label stock but some are laser only silver foil, gold foil, etc. That makes them thicker and also more expensive if the printer streaks, shadows, etc. Also, it means the single feeder (or tray if the tray can handle the thicker stock) has to not move with each sheet because a few pixels and the edges of the sticker go blank, or a word gets chopped (full bleed for a sticker).
My total volume is maybe 100 sheets a month, duplex is nice but hardly needed since I hand-proof each sheet anyway I end up doing most one at a time.
What printer would you recommend in a $200-$500 range. Is there something the next level up for a tad more that makes all the difference in the world? Am I asking too much from any laser (the "good laser printer" at Kinkos shifted all over on the manual sheet feed too making me do 2 or 3 prints per sticker page)
PS Consumables prices being lower helps too.