Is the Exmark Navigator or the Walker Model C worth the money? I would get the 42" model of either. I would use it mostly for residential customers, and maybe 1 or 2 commercials. Do they manuver well in tight spaces, and do they suck up grass well? Also, do they work well for picking up after dethatching, or would I still have to rake before using it? Im kinda leaning to the Navigator because I would have to order the Walker, and there is a 1-2 yr old Navigator that has never been used at my local dealer. Thanks in advance for any input.