Upgrading, Help Audiogoners

HI PEOPLE,
WHAT DO YOU THINK GOOD MOVE?? HAVE KRELL KRC-3 PRE AMP CONSIDERING KRC-HR, ALSO HAVE KRELL KAV 250 CD, MOVING UP TO KAV 300, POWER AMP IS OLDER KRELL KSA 8OB. ANY SUGGESTIONS LET ME KNOW, YOU WON'T HURT MY FEELINGS
SINCERE,
TOM