I have an '04 S4R (the 996 engine) which is very similar to the 07 S4RS, but not quite as nice ;-). It's my daily commuter from Markham to downtown Toronto this year. My wife owned a Duc 695 which I frequently used, and I've also tried an S2R 800. But before the monster it has always been sport bikes (F4i, 636, R6).
My experience :
Pro's :
- fantastic torque
- relatively comfortable (compared to the SS's)
- great handling, even with the stock suspension (yours will be considerably better)
- easy to flick around in traffic downtown
- sounds great, even with the stock exhaust
Con's :
- really *really* heavy clutch. Almost unbearable in stop and go traffic
- terrible range on a full tank of gas, even when you're not greedy with the throttle
- cold hearted beast that does not like to start when cold
- terrible off idle response.. rough, abrupt. It makes dealing with slow or stop and go traffic a series pain
- heat off the engine in traffic will sear your thighs
I'd suggest buying the S2R800 (not 1000) if you plan on sitting in any type of traffic on a daily basis. The clutch is far more traffic friendly, the bike will handle much better off idle as you deal with stop and go traffic, and the heat won't kill you. Plus it doesn't have the huge rad, but is otherwise identical.
If you're planning on using the S4RS for evening and weekend blasts, it'll be a ton of fun. It could even handle the occasional long ride as long as you plan to fill up *frequently*.