I have a dawes lightning sport bike that I think is better than the denali (I own both...). I would suggest you get that from a seller named "chicabike" on ebay... it cost me 240.00 (which included shipping)...

I have over 600 miles on it (which doesn't compare to cigtech but he repacks bearings on hubs and bottom brackets, which I don't...) and it has been maintenance free so far...

I tried pushing the denali, and maybe its my age and weight but I can't push that denali as fast as my dawes...