im looking at either a joe rocket supermoto jacket or a speedmaster jacket any experience with those jackets and joe rocket sizing i want the jacket to fit snug for a more racing look, feel, and safty. im a perfect fit for a 42/34/33 although i have a 32 waist.... any thoughts etc?

 

I have a Joe Rocket Rio mesh jacket, and wear a size Large. I'm about 6'2", 180 lbs, with a 34" waist and sleeves about 34". The jacket fits snug, but not too tight and enough room to move comfortably.
I tried an XL and it was way too big....would have been ripped right off if I went down wearing it.
Don't know about the supermoto or speedmaster. If you want a skin tight fit, you may want a medium. The sleeves on my large do not come all the way down to my hands, but my gloves make up for that difference.

Hope it helps!