I also tried Taulman T-Glase PET, hard to handle compared to PLA. Good for vases. (PET Review)

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I find it is a different material compared to PETG. (PETG Review)

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What I have have found out that some recycle companies struggled/struggle to recycle both materials together as:
"Recycling PET and PETG together though gives a headache for recycling companies. Due to the different melting temperature requirements, PETG melts before PET and sticks in solid chips forming large clumps. This causes a problem when recycling those two materials together."

And yes indeed I had to raise temperature to 240-250 C to achieve clear shiny (semi transparent) result for Taulman T-Glase PET compared to 230 C for PETG.
PETG is less brittle compared to PET.
Both materials will leave a lot of stringing if there is a lot of retraction.