Any Sport bike riders here?

I've been wanting a bike for some time now, & with the economy still in the toilet, motorcycles aren't selling, so it's time to buy. Harleys & cruisers are not my thing, so bear with me. I've done a fair amount of research & I've narrowed my choice down to the Suzuki GSXR 600 & The Yamaha R6. Does anyone on the site have or had either of these bikes? Any good or negative feedback is appreciated. I'm not a complete beginner, I had a couple of bike years ago & I've ridden a several Sport bikes in years past.