Toxtricity (Amped) is pretty good.
It gets a decent movepool and the only difference (other than natures) is that it gets two different moves than low-key toxtricity. Low-Key gets Venom Drench and Magnetic Flux while Amped gets Venoshock and Shift Gear respectivly. It all comes down to wich form you like better mostly but I like to use a Amped Toxtricity as I use another one of my pokes to toxic spikes the opponent, faint them or switch them out, and destroy the next poke they switch out with Venoshock.