(1) LeMaitre Neutron Hazer
(2) Martin/JEM 24/7 Hazers (1 working, 1 constantly screwed up somehow or other)
(2) Eclipse / Fogamatic Heat Foggers (1200W Meteor /1800W Vertical Discharge)
(3-4 or so) little ADJ/Chauvet 700/1000w crappy backup fog machines (just in case)
(1) $12 Wal-Mart fogger (400w) with a power inverter mounted in our equipment truck to screw with people - LOADS of fun at bar time or when rolling up to set up a gig when there's already people there partying (ala "Cheech and Chong")
AND ... If you're serious about using heater-type foggers, people, and want to increase your output while cutting down on residual, as well as greatly increased "hang time", I seriously recommend Martin "I-Fog" available at centerstagelighting.com... OR for maximium fog density and fog that hangs around like a cloud for WAY too long, pick up a gallon of "Swamp Juice" from www.froggysfog.com - they actually contract with the US military for urban training fog generators as well as distribute nationally to fire training facilities, seriously good fog goo!