I have used both quite extensively, and while they are both great units we opted to
purchase the Freeze
Fog units with Geforce 3
smoke machines. The LSG MKII's that I have used in the past have been rented from Communilux Productions here in Dalllas and are older units using the G300
smoke machines. The biggest difference I have seen between the two units is the CO2 consumption rate. The MKII will usually burn through a 180liter
dewar in about 1 hour while the Freeze
Fog units will last 1.5-2 hours running continuously on one
dewar. That being said, we still spec them out at 1 tank per hour when putting them on a show, because you never know just how full the dewars are...
The other big factor with purchasing the Freeze
Fog for us was that we are technically dealers for
LeMaitre and received a much better pricing at the time we purchased the units over the cost of the MKII. Even if the pricing was the same, I think the extended run time of the Freeze
Fog definitely wins out. As far as the look of the low
smoke, both seem to produce an almost identical look.