I went and test drove the new Aprilia Tuono v4. First of all, the yellow is awful! I admit that I wouldn't buy any yellow bike but this particular yellow is fugly. The yellow seat was already turning black....
This is what I thought of it....
Comfort - It was very comfortable with the bars being much higher and wider than the SF.
Motor - Sounds amazing. Very smooth and easy reving. Fast when rev'd up.
Clutch/gearbox - Super lightweight clutch pull and nice shifting with power shifter.
Handling - Its best feature! Very easy to ride. Turns in and holds its line really nice.
Suspension - I'm sure it wasn't set up for my 165lbs but the forks were pretty lousy. The rear was fine.
Head turning - None! I went up the mountain among a bunch of bikes. Not one person even noticed it. I was shocked, it being new and all but it just looks like every other japanese bike.
Overall impression: I'm very happy (and relieved) to report that although its a nice bike at a great price, its no-where near the visceral experience I get on my SFs. It is very easy to ride and would be preferred for commuting or a long trip, but man did I get a big smile on my face when I got back on my bike. Every year during spring I get the fever for a new bike and I was starting to feel it bad recently. I'm happy to report now that after riding the Tuono, I was actually reminded how much I love my bike.
If your getting bored with yours, I'd recommend going and riding something else, you'll probably fall back in love with yours all over again....I did!