S/O Bottle --> Sippy transition: Sippy cup of choice?

GatorMrs_Esq

My DD will be movin' on up to the toddler room at her daycare in a few short weeks (*sobs*).  With that move comes many transitions, including a 'ban' on bottles.

We're trying to work with DD, but she hasn't been too enthused by the sippy cup thing as of yet. I've only used the 'soft spout' variety so far, but is there a particular brand you have had success with?

Thanks, ladies!