EDIT: OK I missed the part where you mentioned a 110cm stem

Thanks for all the help. What is a "flipped up stem"? Do you mean flipped up handle-bar? Thanks so much for the advice and fit info.

Just to make sure I understand your meanings: Both bikes could be made to fit the same, but the L frame will allow me to have further and higher handle bars, and wider range of riding positions.

Should the fact that I may be riding lots of hills, and mountains and would like to have a little more control over my bike make me lean towards a L or M frame?