Yeah, 600's are fun the first few years of being on a rocket. 750's are a blast and 1k's are overkill. I am all about overkill though
Honestly my next bike will probably be a 750. The 1k is just too insane to have much fun on. You can't press it hard enough to really start having fun without being at 150+. First gear does over 100 mph. I have only had this one to 175 mph indicated. I need to get a nice stretch of road somewhere.