AVS2 compared to Street Demon?

My 650 AVS-2 showed up today. Found it on e bay for $310 free shipping no tax. Got it installed and I set the choke and fired it up. What a difference from the 750 performer I took off. I set the idle mixture screws and she runs just a smooth as can be and it doesn't burn my eyes in the garage and the choke is dead on it worked perfect. Looking forward to getting it out on the road but with 3 feet of snow in my yard and a prediction of a lot more coming this week it's going to be awhile but the first day of spring is only 18 days away.