@Tyler Labelle
Tyler I was asking the same questions as you about 2 years ago and went ahead and installed mini splits in every room of a 20 unit complex. These are heat pump units that create amazing heat in sub zero weather conditions.
My reasoning for going with a ductless system was partially due to the existing ductwork in the lower level units was completely rusted out and every hvac system was original from 1972!
Check with your electric company and see if they offer rebates for installing these energy efficient systems. I received a rebate of $800 for each unit and additional rebates for sealing up the old ductwork and increasing the attic insulation.
After researching all of the different brands of systems and reading reviews, I ended up going with a bit of an off brand manufacturer...Pioneer. So far, with these systems going through a winter, a summer and now winter again, I couldn't be happier with their performance. We installed indoor units in each bedroom and one in the living room, so residents can control temps separately in those rooms via remote control. The service from Pioneer has been outstanding and I have no regrets, thus far. If you'd like more info, feel free to PM me.