I've owned something from all of the major Japanese manufacturers. Everything from a 100cc Kawi up to an RC30 Honda. I traded in my 1990 RC30 for a1998 Ducati 900 SS Final Edition. That bike just turned 14 years old last month. I've put all but the first 38 kilometres on him. It may only be a two valve, air cooled twin but it's got grunt! Furthermore, it's fast enough that I have to watch myself so I don't get into any trouble. It's some what comfortable, very fun to ride and still turns heads where ever we go. I have not had to spend huge amounts on maintenance, (unlike my RC30) either. Yes it's had the belts changed, but only four times in 14 years.
rinomato1, you need to make some hard decisions. Otherwise, you're going to drive yourself crazy. What's your price range? How much have you budgeted for operating costs? (Things like insurance and maintenance.) You want a sport bike but, for what purpose? What will be you're main "sport bike" activity? Any of the bikes mentioned so far will be fine for track days. Although, some will be more cost effective then others, especially when repairing crash damage.
If spirited riding on tight twisties is in your future then the torque and wide power band of a lower revving twin may suit your needs better. The wife and I ride the mountains of North Georgia, Tennessee and North Carolina each fall. I much prefer to just roll on and off the throttle then to be constantly changing gears when exiting or entering the multitude of turns we encounter. She's only ever ridden her M600 Ducati down there and never thought she'd ever need anything more. Although, now that she has her 796 Monster I'm sure she'll be much happier when climbing some of those step grades.
So, think about it. Maybe make a list of what you want, don't want, like, don't like. And visit as many dealers as you can. I know, there are several models that aren't readily available in the GTA. Still, I can think of worse things than spending a Saturday sitting on bikes and talking to service personal.
Me? I'm thinking about getting the new MV Agusta F3.