I own an 86 250R and a Banshee so i can give you some unbiased info, not saying anyone here is biased but you know what i mean. There both Great quads But in there own areas. My 250R is stock other than Piped and Jetted, K/N intake and 39mm Keihin Carb. My Banshee is stock other than 2:1 single carb intake, Toomey T-5 Pipes and thats about it. In a straight away My Banshee is flat out Faster no ifs ands or butts! The 250R Just dont have that Crazy Pull off the line like my Banshee does. On the Track i gotta go with the 250R tho, Much easier to whip around, jump and control the overall quad. If your going for straight out speed than stick with your Banshee, Unless the 250R is Worked it aint gonna touch your SHEE. I think after a few weeks you would really be missing your Banshee. Id get rid of My 250R before i would get rid of my SHEE! Thats just my opinion.