My son loves his X5. Much bigger battery than the X3. The upside is better bass response, the downside is that it needs a separate AC charging transformer vs. the X3 which charges via USB. Bluetooth pairing wasn't really designed for what it sounds like you're trying to do. You could go with a Sonos system at the high end. Or if you already had power speakers you could go with one or more Airport Express units and use Airplay from your Mac or virtually any iOS device.
2/2/15 at 8:32pm