ya no what.. i just rode my friends dirtbike out at armagosa without a paddle.. and its a 4stroke and i had a blast... it was pritty smooth.. and i enjoyed the ride till i threw the dirtbike into a wheely when turning and well it landed on my leg. but it was still hella fun... now i wanna get a 450 but i havnt decided weather i want the 4 stroke or 2 stroke... i would be driving it on the dunes and as a trail bike.. to an extent... i wouldnt really be raceing "much" but to have that adrenaline is what im looking for.. i love my 700r but ive been riding my friends dirtbikes and now i no how they handle on the dunes they are even more fun.. so now im going to get one.. just gotta make up my mind.. but i think i would go to the 4 stroke....