Back in the days where I used to be a full shipper, and had an OTP in almost everything, I used to ship Blaziken and Gardevoir. On top of that, Torchic is obviously the cutest, and my Blaziken is my oldest
accessible pokemon, and the only survivor from my original Ruby cart. Now...Combusken on the other hand...no, I just try not to think of that obviously awkward stage of puberty. Combusken seriously had the worst 'teenage' years of all the starters...standing among Quilladin, Pignite, and Servine...
I always did like this picture, though...
Edit: umm...I don't think that there's an active "Favorite Starter" thread in Pokemon Center. Rather than open one in each region, why not put a cumulative thread there, and just ask for the favorite from each region?