I have a scag v ride and while I have not used a GS or Vantage I have looked at them closely at local dealer. Even thought the Scag consumes more fuel, I think you get a better built machine. The frame on the Exmark/Toro model seems lighter and not as thick. The hydraulic oil resevoir is right out on top of the mower on GS and hides nicely under the steering column on the Scag. Scag just makes better longer lasting stuff. The steering controls on the GS seem loosey goosey while the Scag is very tight and percise. Just my thoughts on looking at GS and Vantage closely. I personally think they make overpriced junk, with inferior and cheap parts. One think I do like about gRANDSTAND is that the deck is suspending from metal arms and not chains like the Scag. The deck balance and pitch gets out of wack too easy on the Scag.