Compared to the MF4370dn, Canon imageCLASS MF4350d is having $50 cheaper price tag, only $249.99. Of course, the cheaper price tag must sacrifice something on it, you don’t able to attach this printer into your network as no Ethernet port available.
So, if the sharing service is not a must thing that should be used in your office, and you just need AIO printer that covering printing, faxing, copying, and scanning operation in one device with monochrome laser quality output, the MF4350d is your true solution.
Don’t push a thing, when you don’t need it, right? As note, the MF3450d is equivalent in specs, ability and quality to MF4370dn, but, again, it doesn’t include Ethernet port.