I put a +2 on mine and I LOVE it!! I seem to ride alot better over woops and stuff, I can do some steep hill climbs and not worrie so much about fliping over,
I was power sliding it today really hard for the first time and it felt really good.
I like to do alot of drag racing and didnt want to scare any bikes off with a long swing arm, and didnt want to losse traction and wheelies so thats y i went with a +2.
and another + is that the stock brake line can be used and it look ok.
What are you thinking about going with?