By arrangement last night I was playing in a Dorking Hotel through a colleagues Disco already set up with FBT powered speakers ( i think X Lite 12 inch)

Outside my son was running the Rodeo Bull with some Country Music pounding through an i pod fed into a single Alto Truesonic TS112a

At average volume I thought the Alto matched the FBTs for quality and bass end.

Didnt manage a high volume comparison for the sake of the Hotels licence

Dont know the reliability stats but the Altos seem reasonable vale at approximately half the cost of the FBT, although this might not be a totally fair comparison.

The FBTs produced some feedback on the cheap radio mike I was handed to use--probably unfair criticism, didnt have time to get out the trusted JTS.