Hello everyone, glad to see such a large discussion. I would just like to voice my opinion on the Toxitank deck. Now I have never played any other SP deck but I do know Toxitank is very good.
People believe it is hard to get all the pieces, but not really. In the 15 times I tested it I got a fully loaded Toxicroak a stadium and Skuntank turn one 11 times, turn two 2 times, and later then turn three once.
With a cyrus's conspiracy you can grab energy gain, an energy, and a roseanne's- all you need, or if you already have the pokemon you can grab another cyrus's and use it next turn to grab another and a poke turn, keeping your toxicroak bouncing back to your hand over the next 3 turns. Believe me, it's easy.
Now people say Machamp can get an easy win, in my deck I tech in a lake boundary for the 1 hit KO. Against rampardos I use one of my three snowpoint temples, I hit him for 60 +10, he swings for 80, I use poketurn (always have an extra toxicroak) and attack for an additional 60, me 1 rampardos 0. Now you can argue that the odds of a poketurn are slim, not really. I run 4 then 4 Cyrus's so I can grab one every turn.
I guess I'll bring up power spray, no Uxie, Azelf, Gliscor Lv.X, Claydol, Delcatty, Blastoise, Drapion Lv.X, etc. It completely stops Blastcatty.
I will acknowledge your point on Mewtwo Lv.X, yes Toxitank does have Dialga G lv.X, but it's not the perfect plan- A) I have to get it active to level up B) it's difficult to find it and the Lv.X in such a combo deck C) retreating it once it's active. I'm actually thinking of putting a mewtwo Lv.x into Toxitank for the mirror match (which is horrible because skuntank G can't poison G). I guess Toxicroak will just have to donk before Mewtwo Lv.X hits the field.
Well thank you for reading my argument, I may not agree with what you say but I will defend your right to say it.