Need spill proof sippy cup recs

jjamas

DD is 20 months old and has been using sippy cups for months now, however she refuses to use them for milk.  We have finally gotten her to try them and they all are leaking milk all over my house.  I guess it doesn't help that she turns them over and shakes them, but I know there has to be one out there that doesn't leak so easily.  I have tried so many cups and wind up with milk puddles on my carpet.  Any suggestions of cups to try?