It really depends on what you are looking for and the type of terrain that you are cutting. I know that the Ferris with the Full Suspension does offer some significant benefits to deals with the bumpy surfaces.
Is speed of cut a significant factor in your buying decision?
A Walker Mower may be a good decision as well if you are inclined to want a really good cut with excellent collection. The Toro has a wide variety of models from their Timecutter, Titan and Commercial line of mowers with really more models and options than I can keep track of.
I find the best way to start looking is compare the models and see what the key difference are and then try and arrange an onsite demo so you can see for yourself which models you like.
Up in Toronto we can arrange this with different models, I would bring out a Toro, Walker Mowers and a Ferris and let you ride all three to see what does it for you.
You can check out our site in the link if you want to cross compare the models with respect to specifications, ground speed, power, deck composition, weight, tires, fuel capacity etc.
Again, I would recommend calling your dealer to arrange an onsite demo once you have narrowed down the models.