Fusion, DMR, P25 and D-Star are all unintelligible without a decoder. The advantage of DMR is it has two time slots and can carry two conversations at once. The disadvantage is that its probably the least expensive to get into due to the proliferation of DMR transcievers from Anytone and beofeng. I've used a rtl-sdr ($25) with sdr# and dsd+ to decode dmr and p25 phase 1. Of course we're talking well beyond the skills and interest of the unlicensed baofeng brigades but it can be done.If you don't have a Yaesu radio with System Fusion it sounds like nothing more than static.
Now if only someone could come up with a way to do winlink over one time slot of dmr and voice on the other, one repeater to would handle digital voice and email.