I'm looking to start my second army as Tau but what to first get a model to paint just to get a feel for if I'm going to enjoy painting a whole army of Tau.

I know the Battleforce may be a good place to start an army but I just want one model/unit to start. So my question to you is, what one model/unit should I buy to start with? Which one is going to be in an Tau army that I might come up with? I'm assuming XV8 Crisis Battlesuit right?