Yeti, Rtic, ozark trails work well too, but I run ice water in mine. Rtic has better lids, that are less spillproof than yeti. I just don’t want coffee in mine on the chance it’ll spill or leak.
I second the hydro flask. I have the 20 oz, not the wide mouthed version that fits perfectly in my backpack while flying. It also works great as a shaker cup for protein powder on the road. When I’m not flying, I have yeti, orca and Rtic. I much prefer the 27 oz orca over the bigger yeti and Rtic. At home I use an Rtic and yeti steel 12oz mugs.I am currently using a HydroFlask with a coffee lid. They come in a variety of sizes and I have had good luck with the vacuum insulation working. I use it to bring a double americano to work. For business travel I make drip coffee in the room into a no name insulated mug and then transfer the coffee to one of the cups in the room.
Ruckin.
I have two of these. 16oz Stainless Steel Travel Tumbler | Vacuum Insulated Tumbler | Thermos They are awesome.