Size up or size down? Geometry geek out.

[bikeboy1]

The bikegeocalc is a great tool that I have used a few times for myself and also clubmates looking for new rides.
Like a few have mentioned above with stack and reach being pretty much the first factors to consider followed by STA and ETT data.
When I purchased my V2R back in 18 stack and reach came pretty handy other wise it was always TT,STA and headtube lengths before those two figures became mainstream for me.