After finding many issues with other resuable cups, we came up with the EcoMe Forever Cup. This cup is different from traditional reusable cups in so many ways...
The Forever cup works very well, so well one has to be careful not to drink the coffee when it's too hot. The top is quite bulky, but it's not going to fall to bits -- just have to adapt a bit in drinking style. Insulation is excellent and it is never too hot to hold comfortably.
This is the best takeaway cup I have ever owned no leaking and keeps my coffee hot. I have a gold one and it is awesome.