I don't race on the track, but I really like the feel of a track bike on the streets, especially the stiff, fast, sprint feeling (or maybe that's just riding fixed). So I'm looking for a frame with the geometry used on the track because right now, I feel like my IRO is slow to steer and is sluggish for fishtailing skids. I rode on my friend's Volume cutter with 74 st and ht, which felt a lot more responsive and easier to ride and skid.
I feel like having that track sprint feeling that I love is way more important than having the "comfortable" road choice. Because in reality, my rides are usually no longer that 10 miles at a time, and I have yet to feel uncomfortable at all on my IRO. I think the whole point of riding fixed is finding that amazing quick, sprint, muscle feeling every time I ride.

And thank you Ken Cox for the very informative post.