Thank you, Gremlion. I enjoy the simpler graphics of Genesis (big fan of Might & Magic, Master of Magic, etc) and was just curious if the New Horizons mod is a deeper experience than Masters...
Maybe I'll have to play 'em both. ;)
Masters is the rewriting Genesis into 3d, and dlc is a small batch of units for existing alliances. It does have some advantages over Genesis, like shard effects, some engine limitations were removed(aura skills were made possible), and some of Genesis unfixable bugs fixed. Although, citing folklore, there were 100 bugs, one was fixed, there were 130 bugs...
NH mod is a huge content overhaul, with similar to Disciples 3 unit growth system (not a fan of it, personally), new races, and many new items, events and neutral enemies.
NH creators, due to non-profit nature, don't bother with copyrights, so many new things from MOTBW were added into Genesis. Even shard effects were reworked for Genesis, although I don't remember was it standalone project or NH.