getting into Tau: ideal setup for a first-timer?

Had a talk with the guy at my local shop and after some consideration, he recommended I either get into mont'ka or Retaliation Cadre to get a decent setup. after reading through the codex and Picking up some Crisis battlesuits (unsure whether to do sunforge or starscythe for them) the other day, I wanna ask: which detachment would be better?

I like the "sit back and blast" type of mentality of mont'ka but Reading the Codex made me think that Retaliation sounds like a solid way to get myself set up, especially since the guy at the store said they'd be going out of production but are worth it on the value. So I thought I'd consult you guys for advice! Am I looking at this wrong, Or is there a certain way I should look at things regarding the kind of setup for a beginner? thanks in advance