[JCSouthpawtele]

As a Front of house sound engineer I recommend.
Direct box-Radial engineering Passive D.I. no noise from that and no battery to die on you. or countyman D.I.
For amps.
Mesa 400,David Eden (was not mentioned yet)
Ameg,SWR

4-10 cabs,tighter punchier sound
15" cabs tend to put too much low mud in your stage mix unless its outdoors and has the room to send out the frequency waves.

I have run rigs with both a D.I. and a mic on the cab for some bands who like to have some grit out front. I set it up on my mix to have the low end of the D.I box sent to just the subs on an Aux fed Sub-woofer out put setup on the large concert rig.

(note the larger rigs usually have the subs sent out via an aux send and only send the subs kick drum, maybe floor tom,bass guitar and maybe some low keys DI , it clears up the mix by not crossing over the full mix and getting low mud signals from other mics and such,it just gets what they need in the low end. pro talk here but you get my drift)

The cab mic only going to the mid cabs for the mid punch gritty sound just underneath the guitars and vocals to sweeten the sound. It cool when you can get that big stacked national rig sound.