i knew of someone that switched from sportlines to pro-kits on his accord. supposedly the pro-kits have a stiffer spring rate, which would probably make them ride a tad firmer. then again sportlines will have less wheel travel, so it may ride worse too. i do believe he like the performance of the pro-kits much better though. have you looked into neuspeed/h&r sports? they are in between pro-kits and sportlines as far as drop and ride slightly stiffer than pro-kits.