Just throwing in my two cents here... *flamesuit on*
I've had my license for over 5 years but only owned a bike for a small amount of that time. Ive ridden a variety of SUMOs, touring bikes, and a couple 600 sprotbiles. I recently bought a liter v-twin (Aprilia Falco) and couldn't be happier with the decision.
By all BARF standards I don't have the seat time to own such a bike but I find it to be quite comfortable and not at all overpowering/intimidating if you ride properly, don't grab at the throttle, and exercise proper throttle control. At the same time, some of my friends who have been riding longer but are less careful and less conscious of how a machine works found it to be scary when taking the same bike for a test spin. I find the power delivery to be smooth, predictable, and usable around town. I don't need to rev out the engine to squirt away from a light, overtake someone, or cruise along on the freeway. If you want to play in the upper end of the rev range there is WAY more power than you will ever need but you can comfortable stay between 3k-6k whether in the backroads, in town, or on the freeway.
I will definitely provide an update once I have a few thousand more miles on the bike and look forward to enjoying the power when I want/need it.
Ride safe,
CL