some links to model numbers you looking at?
it sounds like your more in the business of lawn / landscaping. but for me on the farm here, just a 2 wheel manual push (like push lawn mower) but sends out seeds. works for me. it normally hung upside down. clear up inside the rafters of the shed. but when i need it, it is there, it is big job having to walk a few acres plus back and forth from were seed bags are, but... it is not every year but every few years, or when ever i really tear stuff up. once grass has grown it has grown and just minor repairs are needed. and for those things, i have a little hand held seeder, as well. lets me keep the seed were i want it with out sending it all over the place.
with above said, i could see were a landscaper / lawn person would want a 3pt hitch or like version. more so if doing many yards. but if that is the case i would want to see if various dry fertilizers and seed bed prep-er stuff could also be used in same machine.
with above said i am not a person that wants golf course greens... as long as i can mow it, keep the weeds out, and keep mice and other varmints at bay by cutting and keeping stuff mowed. it is all good.