Kicking around buying a 2011 GG Six Days 250. I rode a 300 a while back and was totally turned off by the flat and listless powerband. Gave up on the idea, heading towards KTM'ville, then by chance got a ride on a 250 GG. I found the 250 to have a nice blend of perky response, coupled with traction gaining slow revving power. I liked it a lot better. Is the powervalve adjustable like a KTM to alter the response, or is it just the 250 is a more responsive engine?