Apologies for asking what is a rather basic question - I couldn't readily find an answer through forum search.

I've been riding my Raleigh Competition for a little over a year now, and am starting to look around for my n+1=2 (not counting my older commuter bike). In my first year of riding, I discovered that I enjoy the competitive aspect of cycling, so after getting my feet wet in a few training races this year, I plan to do more racing next year (purchased my license yesterday ). So I'll be looking for something with reasonably race-oriented geometry (probably a mix of road races and crits) - but whatever I get will be my main bike, so it shouldn't be too uncomfortable on long rides, either.

Problem is - I have no idea how to translate the frame geometry specs that most manufacturers' sites give into a sense of where frames sit on the aggressiveness/comfort scale. Having really only ridden one bike, I don't even know where my current bike falls, although I know that my position on the hoods is more upright than that of most of my cycling buddies, so I figure it's closer to the "comfort" side of the scale.

Are there any easy to apply heuristics that I can apply to the geometry specs to get a quick sense of where a frame sits on the continuum?