Sippy Cup Suggestions !?

ashbash4 • Mommy to Carl and Cora; LOVE THE LIFE YOU LIVE; fuck what anyone says
What brand are your LO favorite sippy cups ?? My son doesn't care for the bottle but when he does it's the MAM one..  
I'm new the sippy cup world, so what works best and what doesn't ? Hard versus the soft ones? 
My son is almost 8 months old and EBF