Anybody have firsthand experience and objective thoughts comparing these two machines? Obviously we're not talking racing here. Rather, I am interested in how the two machines stack up comparing power, ability to pull, fuel economy, reliability, etc. I am quite familiar with the GT Lite and also the larger liquid cooled 550 Panther but don't know much about the 440 AC fan and how it performs. I am considering it as a future purchase if AC doesn't drop its midsize fans as Polaris has already done. Thanks.