I've never ridden any of the listed bikes. leader and kilo seem to have some funky geo. that's on paper though, they might ride fine.

angus and wabi seem to have similar, road style geo. could be decent.

did just try an old style pake today. rode similar to my friend's windsor clockwork. both felt dull and unresponsive to me, but this could be the cheap tires. I threw my wheels/tires on my friend's clockwork and that bike really brightened up and felt much more responsive and fun.

i liked another friend's dolan pre-cursa. that's considered entry, but still around 500 for a frameset. I liked the felt TK2 also, pista concept was okay, not completely worth the markup.

if you can find one, i love my continuum. for the day-to-day i prefer it over my peloton.