Ashdown RM combos are worth checking out, light, powerful, and reasonably priced, plus great customer service from a UK based company.
Also worth checking out the separates in the RM range too - even the 410 is only about 50lbs, stick some castors on it and incredibly easy to move about and with the 500 watt head a rig capable for pretty much any venue that doesn`t need backline through FOH.