Hi Chris, at the moment it’s mostly PETG, though I’m always looking for something else. I’ve got some Fillamentum CPE arriving today/tomorrow that looks like an interesting candidate (I really like their PLA).
Hardly any of my customer orders for ABS have been about the temperature resistance, it’s just about strength and personally I blame a lot of that on how the materials (ABS, PLA, PETG) are described by 3DHubs in the ordering process. They make PLA sound like it’s going to shatter if you drop it and PETG is just described as “having improved mechanical properties”, which really doesn’t mean much.
In my opinion, if someone knows the part is going to be exposed to high temperatures, above the GTT of PLA or PETG, then even ABS isn’t safe. If something is going to get properly hot, then it needs to be printed in proper high-temperature material, like Formlabs’ Hi-Temp resin, where we’re talking about 290C.