i'm in your conscience
Gen IV and V are easily my least favorite starters. I like the design on gen V's first stages much more than gen IV's though, so that's a plus for them. But, considering final evolutions, at least Infernape had a niche in competitive battling. As far as I know, you can't really say the same for gen V's starters. I ditch my starters in DPPt and BW(2) though, so it's hard to really say. But I'm going to go with gen V. I did use all the starters, and I found that I struggled with Snivy, Oshawott's line is overall a bit boring, and Tepig was probably the best of the three for me, however it bores me because we've seen the Fire/Fighting thing. Nothing new.