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Anyone ride both yet ? I sold the 650 in 08 & want a new 570 and was wondering will I still be impressed with a 570 ? 80cc is a lot to loose . I think my 650 dynoed @ 67 hp . Thanks for any input , Im gonna buy one anyway just curious .

I have a KTM 300XC-W that I love, but might go 4-stroke too...I think the 450'd be best for me - desert, some mountain single track, some low key enduro races....But what's the advantage of the bigger displacement bikes...? Does the power make them feel heavier than the 450 (like my KX500 used...