Eclipse PDT got Yii support. It's implemented by Yii community member KEo. Features implemented are new Yii project wizard and views navigation (Controller → View, Controller → Layout, ListView → itemView, view → view partial, component → component's view). Additionally to what PDT already have these features will help you to speed up development even more.
If you're using Eclipse PDT give it a try. Bug reports and feedback are very welcome. You can post these in the forum.