How about a DK Sentry 24" $279.99? Only 0.2 pounds heavier then the Proline Pro 24 $489.00. If you want a chromoly frame, the DK Cygnus $289.99, is another choice, just add on 2 more pounds, it's 27.3. If you want a Redline, the T&T MX24 is the same weight as the Proline and only $339.00

Just noticed the Proline you listed was an '09, all the prices and weights I used are '10s.