How much faster is my buddies 500 vs my 450?

[speedfreek]

My friend is getting a 500 king quad 06 model, automatic. I was just wondering how much faster it is going to be than my 07 450 auto? Oh btw his is a straight axle and mine has IRS.

[speedfreek]

Well we rode yesterday and the 500 has at least 5mph more on top end and it pulls away slowly from a stop. If I get the jump on him it takes his a while to pull away but deff has more power than the 450.

My other friend was on his Vinson 500 MANUAL and his would pretty much walk away from both of the automatics.

Just thought I'd let yall know.