The speed figures will give you a good idea of how a circuits allowance horses match up with various claiming levels. In Chicago, I've seen plenty of sharp $5000 claimers move into bottom level Illinois-bred allowance races and win. For open company at the Chicago tracks, a 14-16,000 open claimer would be competitive in a NW1X allw, and a 20-25000 open claimer could compete in a NW2X. After all, many 20,000 and $30,000 horses have already raced thru their allowance conditions. In New York, Southern Cal and Kentucky, the conditioned allowance and Maiden fields are stronger so a $14,000 claimer may not be able to win a NW1X race at those circuits.
I've also noticed that at the end of the year, the conditioned allowance races get very weak. In November of 1995, myself and a friend claimed a horse out of a $7500 NW3 race in which it ran 2nd. We ran it back for $7500 and it won by 15. According to my speed figures, I knew we'd be competitve in a NW1X allowance. The horse went off at 20-1 and led every step until the last jump, losing by a nose. This was in a December NW1X race in which many of the good stables had left for Florida or Louisiana. That same horse would've had trouble competing in a mid summer NW1X at Arlington.