I have bought a few for Owen, but he mostly just uses whatever his brothers have. I want to buy him a couple new ones from Amazon (his grandpa sent him an Amazon gift card) but not sure which to get. I want ones that don't leak, don't let too much liquid out at once when he sucks (he tends to choke when using straws because he always gets too much), and that are easy to clean. Any suggestions? I'm okay with buying a pricey one, as long as it works well!