Depends on what you already ride, but since you are asking on an R3 forum, I have an R3 and an FZ-09 (2014).
Compared to the R3, the 09 is looser, softer and stupid faster. It's very twitchy on the throttle (like an on/off switch), so it can be difficult to ride on tighter, slower turns, but a blast on longer, sweeping curves. An ECU reflash is supposed to take care of it, but haven't done one yet. Suspension definitely needs an upgrade too; front end is very light.
The torque is awesome! Faster than just about any other bike off the line (not on the top end though. That is where something like an R1 starts to surpass it).
If you're in CA, it's a little more difficult to split lanes than the R3 because of the bar width.
It's a fun bike and easy to throw into corners, but maybe a little too easy. That combined with twitchy throttle could make tight, slow turns scarier without better riding skill, better suspension, and a reflash to eliminate the fuel cutoff on decel. Fun bike overall.
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