I decided to go for Rowlet. I want to like a fire starter but they just haven't been appealing to me for many of the generations. Seems I prefer the grass starter most of the times. I'm not too fussed with it's middle evolution but think it's final looks pretty awesome.
I chose Popplio but had someone here get me all of the starters so it didn't matter which one I picked however, I use both Decidueye and Primarina on my final team. I did fully evolve Litten though for the pokedex.