RTIC. Just as good as a Yeti but half the cost and not as loony politics.
My suggestion
Go with a good stainless steel travel mug. The one I use was a gift. I've had it going on two and a half years. Keeps a cup of coffee from pilot hot for 5 to 6 hours.
Yup, just take a stroll around Walmart, lots of good inexpensive steel options. No need to overpay for a coffee mug
Walmart camping section has good ones you can also buy a handle that slips on and off for cleaning.
THERMOS stainless steel cup, has screw top with silver ring. Sold at Wal-Mart. Cost approx. $20. Makes my rtic seem like a waste.