Looking to replace the 21" with an Exmark Viking. This will be used on my smaller lots and as a trim mower. My question is, What is the difference between the 32 and 36 as far as trimming goes? does the deck stick out farther on the 36 or is the track wider also? I know that I could save $ with a single hydro unit but I have a lot of hills and slopes and want the added control of dual hydro. Any remarks from those of you familiar with the Viking are very much appreciated. Thank you in advance.