Two Dr250 tops and two T39 subs. Since I already had a dual core machine sitting around our whole system cost something like $1,500 ($500 SAC, $450 for 3 ADA 8000, $225 for sound card). Thanks to Brent for getting us started with SAC.
I built my own rack with the amps and ADA in one and the computer, wireless IEM, and monitor in the other. It would probably be better to put the ADA in the same box as the computer but we had reasons for doing it this way. We run about 20 inputs and 5-6 monitor mixes; a combination of wedges and wireless IEM. The main console sits behind me on stage left (or FOH left - I always get those two mixed up), and we run two wireless remote laptops; one to FOH and one to keyboard player who mixes the right side of the stage monitor mix.
We have yet to run an Ethernet cable to FOH - wireless has worked great for us. We use one of the wireless IEM units at FOH for the sound operator to solo channels but have not yet implemented a system for him to talk with us. That's next on my to do list.
Whereas I absolutely love what SAC has done for our sound, it does take it's toll on me as the bass player and only person who knows how the whole thing works. When we do a show with full lights it now takes us almost three hours to set up. I find myself looking forward to the gigs where someone else is providing sound and I can just plug and play.
For a small one or two person sound company SAC is fabulous. For a weekend R&R band it might be a bit of overkill. OTOH the band is less likely to fire me because nobody else can set up the system

Doug