If you are really comfy, get the 750. I have moved through a 500, 600, and now the 750. I love it, it has b+lls and is not too heavy. What I am planning with mine is to get an exhuast and all that good stuff later on. I just got it broken in and haven\´t opened it up yet like I did with all my other bikes, and it still pulls much harder. A 1000 will be there later if you ever grow out of the 750, which you may never. 
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