Part of a longer post that I'm writing on this topic...
A lot of you say that the best bands have their own soundmen, they sound great, etc...
I use an Acoustic 370 all the time (my only amp) and back then I had a 2ohm 2x15... the head has no DI, I was not micing back then (I'll explain my whole story in novel format later when I have the time), but I was told by other people that the unbalanced Monitor Outputs could be used with a DI, so that's what I did.
Last summer we played a gig that was very important to us - we played the band's first ever show in the home town of our drummer and singer (who's also a founding member from 30 years ago). It was in one of the outliyng cities (I guess you could say - suburbs) of Warsaw, funded by the town, so we had good money and the prospect of more gigs organized by those people. It was special to us and pretty big. Because of that, we got our own sound guy for the gig. We wanted to make sure everything sounded the best it could. When we got there he immediately started criticizing the PA, the (apparently crappy) soundboard and the other sound guy (who was there for the other bands playing that day, and who came from a local community centre where he takes care of musical and PA equipment, etc). He made it seem like he knew what he was doing, knew his stuff, and was above the foolishness of the local sound dude who was a good guy but seemed helpless in terms of doing his job at times. So, before the gig our guy decided to go and get all of his gear - that includes his own board and related electronic mumbo-jumbo. Sure enough, he took our van home to Warsaw to get everything. Came back, hooked everything up, DI'd my rig of course, we played the soundcheck, everything seemed fine, then came the time for the show and we were headlining...
...so how did it turn out? Afterwards, we got into talks with the organizers to do more gigs and that went OK. Very positive response from the audience. But, my sound? Weak bass on the recording from the board (Zoom H4n hooked up to a line out), pretty much no bass out front (verified through audience recordings), and it seems that I played the whole gig with my microphone apparently turned off or at least not going out to the PA, even though we didn't complain about anything on stage. So a very important lesson was learned that day, and that's one "personal sound guy" for ya.