I'm using the Mono Producer bag, as I have been impressed by the build quality of their gig bags, and then found one of these for sale pretty cheap so thought I'd give it a go.
Really nicely put together, as is all Mono stuff.
I have the following loaded in mine:[list]
[*]3 instrument leads
[*]3 patch leads
[*]1 tuner
[*]2 speaker cables
[*]2 mains leads
[*]1 socket tester
[*]1 circuit breaker
[*]1 shure mic with stand adaptor
[*]1 Bassbone pedal with PSU
[*]1 Radial Bigshot i/o pedal
[*]1 Zoom HD recorder with stand and PSU
[*]my usual tool kit (2 screw drivers, 2 allen keys, string cutters, 1 capo, 1 string action gauge)
[*]ear plugs
[*]lever arch file with music
[*]2 pens
[*]business cards
[*]car keys and mobile
[/list]
I have another Gator bag that houses stuff I use less frequently as well, such as guitar stands, extension leads etc.