PETG is my new go too filament, It's like the perfect mix of ABS and PLA:)
It does have one down side tho, It's stringy when printing which makes bridges especially tricky. Now Simplify 3d has awesome cooling setting for bridging already, but my problem occurs more when bridging over infill. Turning on the cooling fan helps a lot. But cooling significantly decreases layer adhesion if I set the cooling fan for the entire print.
So yeah a cooling override option for bridges(including over infill) would be GREAT!
I use PETG mostly too, I've just had to start using a more dense infill and modify a few other things to assist with top fill and stringing. So far my most successful settings have been at max for the filament, sometimes higher, using a very small negative restart distance, about a .1-.15 vertical lift, and 2+ on retraction. It's weird but overheating slightly, not enough to cause bubbles, has a tendency to lower stringing while increasing layer adhesion. with the increased I can set my one 40mm fan to about 20% starting on the second layer.