I'm a relatively new street rider (2 years on sportbikes and been around dirt bikes/mx bikes my whole life). I had a 96 ZX7 my first year riding and a 98 ZX9 last year (upgraded because i got an excellent deal on the 9). I'd like to upgrade again to a newer bike because the 9 has over 40,000km on it and to be honest, i'd also like a cooler looking bike. I'm looking for advice on what size of bike to go with...600, 750, 1000? I've ridden an 05 Gixxer 6 and found it felt much lighter than my 9 and was fun in tight twisties, but i'm concerned about how little torque the 600's have. Will it bog in low speed traffic start/stops? Will it bog down when i've got a passenger? The 6's also seem to sound louder and attract more attention (negative) because of the higher rpm's. For comparison, I never felt my ZX7 lacking down low, but i also never rode it two-up. There's good deals on new 600's right now, in fact new ones seem to be the same price as used ones.