Everyone is making good points here. I guess what I'm asking is the 120R similiar to the 110" we have as far as reliablility?
I think you're asking a question that at this point, really can't be answered because there are not enough of them out there on the road at this point to know.
Like Spiderman said, how much is enough? I guess that depends on who you are, and how much money you want to spend, and how reliable you need the motor to be. For me, enough has always been putting decent headers, mufflers, and if needed, a different air cleaner assembly, then getting a decent MAP for the bike to cool things down a bit, and at the same time make drivability better. Beyond that, it's hard to figure out where to stop with the modifications, IMO, and you have to start being concerned with the bottom end of the motor, which gets into some more serious $$. Even stock, the crankshaft on the 110 is something to be concerned about, and if the 120 has the same type, I'd be even more concerned. But, I'm not a motor head, so take what I say with however many grains of salt you choose. If I really wanted to go fast, I'd just buy a 13K Ducati and scare myself to death....which I did, and sold it.
But, back to the point...in another year or so, when there are enough 120's out there with some real miles on them, there might be a better answer to you question...especially if they put the 120 in ALL CVO bikes in 2012.