My experiences with an L1 were about the same as what Keith and spigmu will tell you. I, too, did a Bose sponsored demo in Dallas once a few years back. It was OK, but they gave me 4 subs for bass and that wasn't enough IMHO. Plus they didn't have monitors and expected us to rely on our own individual towers for mixing ourselves to the crowd. Well that's all well and good, except the idea of monitors is to hear your own voice louder than the music without being heard in the FOH. So the singers would come up onstage, not hear themselves, demand to be turned way up, then screw up the mix.
It was at that point I decided they would be way better suited for an acoustic act or a single/duo that rocks karaoke tracks, maybe a quiet lounge band. Anything beyond that, forget it. I did, however, like the thing most are complaining about...the wide dispersion. I consider that a plus for it to sound the same as you walk the room.