Hello,
I´m new here and hope you can help me.

I was looking for a frame with appr. 1000g and found a good dealer on aliexpress.
http://www.aliexpress.com/item/2016-carbon-mountain-bike-frame-29-China-Axle-142x12-or-135x9-29er-PF30-UD-matte-mountain/32598237061.html?spm=2114.13010208.99999999.261.G1TB6A

The first contact was no problem, but now I have the probelm wich size I should take.

At the moment I have a Cannondale F29 and the frame is small.


The seat tube is 390mm. It is very comfi to ride, but it looks strange.
Do you think, it is the best choise to take a frame with 400mm seat tube (580mm top tube) or with 429,5mm seat tube (598mm top tube).
I think, with 598mm top tube it would be uncomfi and hard for my back. My back is hurting, when I ride long distance.
I´m 168cm and innerleg is 79cm.

A member here in the forum is 171cm and 80cm innerleg and he is riding a 17"


Maybe I should buy a 17" and than a short steem, or smaller frame and normal steem.
Hard to choose.