Hey guys. I'm trying to talk my dad into letting me get a 36". just Anyway, I just need the advantages/disadvantages of fixed/floating decks. I want a Metro HP with a 15 Kawi, but am afraid that it will be difficult to find a used one for the price I'm willing to pay. I might be able to buy a new Metro fixed with a 15 kawi, but how easy is it to change the deck height? I know they don't scalp much, but I change my deck heigh quite a bit. Is it like a 2-3 minute thing or does it take longer? I checked the efficiency rates on Exmark's site and the efficiency is almost double compared to a 21", but my dad begs to differ. He says I won't save any time I will also consider Toro as well. I'm just looking for advice since I don't know much about walkbehinds . Thanks alot for the help guys!