I felt the 19 worked the engine too hard for every day riding, but maybe that's just me... Anything under 4K RPMs seemed like the engine was slappin' around inside. The fact that I'm a little over (ahem) ideal body weight may be a significant factor in my 19aphobia.
I like the 18 well enough, but somewhere between 17 & 18 would be right where I want it.
I have the stock 16 toofer around here somewhere. If ever I get back to a dyno, I'd like to see what, if any, the difference is as compared to the 18. Not sure how that works.
