Having owned a few superbikes since passing my test in 2010 (Gixxer 750, RSV4R Aprilia, Duc 996R)the SP2 is the only one that really ticks all the boxes for me. It has the comfort and ergonomics of the Gixxer, the charisma of the RSV4 and a better soundtrack than the Duc.
I got tired of having to ride everywhere at 8000RPM on the Suzuki just so there was instant power to overtake, I got bored with neck ache on the Duc, and the sphincter loosening power of the RSV4 (plus the lack of wind protection on its mini-moto dimensions) made the Aprilia a bike that could only be enjoyed when in the right mood..
No, the SP2 is a real world superbike that just works on the road - it's small, but comfortable, it's got instant power but doesn't need electronics to stop you looping it, it has charisma in spades but isn't a pain to live with (it's a Honda after all. And the noise from the carbon Akrapovic cans is pure adrenal music - it barks on start-up, it bangs, crackles and pops on over-run, and on full power the hard edged blast is awesome!
There is currently no other bike on offer, new or used, that tempts me to want to change the SP2, I just love everything about it!
If only Honda (or any other manufacturer) had the courage to offer a real world superbike like the SP2 today - just make it a little lighter, improve the range to 150 miles, tweak the styling to bring it up to date and I think they would have a winner.
My advice is to grab an SP2 while there are still a few about..