How many sippy cups and how many different styles/brands do you have?

Right now we have:
4 Tommee Tippee Trainers with handles
4 Playtex insulated with straw (these leak)
1 cheap playtex insulated (also leaks)
1 camelback water bottle

We are trying to get rid of the bottle but she doesn't love any of these for more than a sip or two. Plus they leak.

I think we have more than we need but should I buy more variety?