Originally Posted by
luvarb
6.1, 140lb, long hands and wear a 33 shirt size. Also long legs and 34 inseam
...[snip]...
I thought I'll need the Synapse 60cm but measuring per their guide, looks like 58cm may be a good fit.
In case this is still germane five months after the OP:
I am 6'0" with a 32" or 33" inseam, and I've been riding a size 58cm Cannondale Synapse since 2006
...and it has always felt just a little too big for me. (Plus, the two custom made-to-measure bikes I had built for me subsequently spec out a bit smaller than the Cannondale.)
So I would bet the 58cm would indeed be a good fit for you.