I'd think twice before buying used, never know if the speakers are shot. usually no guarantee!
I have a z5500 505 watts has the center speaker ( which really makes a difference) I paid $276,00 with free shipping, You'll have to shop to get this price but they're out there. Highly reccomend the z5500 big improvement on vocals and overall sound quality, lots of volume and it stays clear. Will do a medium club no problems.....Pose