I love PETG because it prints with little warping, prints with nearly the ease of using PLA, and the layers adhere with an unprecedented amount of strength. On top of that the best quality is (as with any PET base) it is extremely strong, and very heat resistant. Additionally, I pay about $20 per KG (about the same you would pay for PLA or ABS) and it comes in an abundance of colors. In other words, it is nearly the perfect filament.
It prints slow though. About 2000mm/min
Yes, I see many people migrating to PETG. ABS is nearly useless in my opinion. It prints too soft, warps on anything mid size and up, and it shrinks in random spots. PLA, although it prints fast, and beautifully, is not particularly strong, resists no heat and is super brittle. As 3D printers are coming further and further along more machines every day become capable of printing PETG. Engineers like me, made it first priority to discover the best in 3d printing filament for our printers, mostly because the things we print often are used as working, or structural parts. However the people who have no need for structure (the people using their printers to make statues, and “sit on the counter” models) have no reason to stray from PLA.
The biggest problem using PETG on a FFCP is that the PTFE tubes jam more often than usual. As a result I’m looking into sticking some all metal hot ends on my printer. Would really like to see if someone has gotten 2 v6’s on there.
I forgot to mention in my OP that I use simplify 3D for slicing, so I have no need for standard dissolvable support, as my generated support peels right off of the print. The types of support I use for dual extrusion are drawn in from my 3d modeling software and imported as a separate file, then I print is as if it were one piece (much like a dual color print). Using this method insures that you can print ANYTHING within the constraints of the bed size, no matter how complex and it will always come out perfect.