I start back to ep 10 so no gen 6 yet to pick Froakie (and when 10.5 come out I dont want to restart) so I picked Piplup as one of my fav starters ever and water starters besides Totodile, (Froakie already mentioned) and Squirtle
So my Fav Grass starters by order
Turtwig line, Treecko line, Chespin line, Chikorita line (can't wait for Grass/Fairy Mega), Bulbasuar line, Sniny line
Fire starters by order
Chimchar line, Charmander line, Torchic line, Cyndaquil line, Tepig line, Fennekin line
Water starters by order
Totodile line, Froakie line, Piplup line, Squirtle line, Oshawot line, Mudkip line