Also have a MFC-L3770CDW, it's perfectly fine but you really have to pay attention to consumable cost when selecting laser MFC. A cartridge of TN227BK (high-yie

Also have a MFC-L3770CDW, it's perfectly fine but you really have to pay attention to consumable cost when selecting laser MFC. A cartridge of TN227BK (high-yield black toner) for the MFC-L3770CDW is ~$80 for a ~3000 page yield, while a TN433BK cartridge that fits a MFC-L8900CDW is $85 for a ~4500 page yield. That's a (toner-only) cost per page of ~2.5c vs ~1.8c, or nearly a 30% reduction in toner cost; the difference between which is amplified for the color cartridges (TN227 color is $100/ea for ~2300 pages, TN433 color is $136/ea for ~4000 pages or ~4.3c/page vs ~3.4c/page). Considering the price difference between these units, I opted for the MFC-L3770CDW because I do not print that often and I've spent far more over years on wasted ink from dried out cartridges and destroyed print heads; but it's still an important factor to keep in mind.