I use an LX4, but that is because I already had it from my 2210. There are a few folks aroudn here I knwo runnign KK 60" models and they are fine and have no problems.
I would guess the biggest down side to a 5' is that it it was heavy enough brush you might need to slow down a little.
I would guess the biggest down side to a 5' is that it it was heavy enough brush you might need to slow down a little.