a yzf600 is heavier than a katana...i had a katana as my first bike and a yzf as my 2nd, i liked both but an r6 or zx6r would look better...lol

but the yzf600's and katana's are a lot more comfortable


and NEVER lower a bike...lowering a bike makes it more dangerous to handle...you'd much rather drop it a 0 mph because you can't touch the ground instead of it throwing you off because it comes unstable around a corner at 50 mph