Most of the time I use two Barbetta Sona 31Cs. Wonderful sound, light weight, plenty of power. I previously had two Barbetta Sona 32cs and traded them to Hank B for the 31s, mainly because they are a little smaller in size.
Both sets are great.
I also have a couple of Logitech Z2200s, but don't use them much anymore unless I have dual jobs and don't have time to move.
Last night I did both a wedding and receptions. At the wedding there was a couple that sang a song. They had brought their newly-acquired Bose PAS with two subs.
(Well, yes that was overkill for doing one song at a church!)
Anyway, I ran my laptop through the Bose and it sounded great. It didn't exactly blow me away as I expected, but when I asked the guy which preset he was using, he said none, that he had everything flat, so I suppose he didn't know anything about tweaking it.
DonM