@the above discussion:
Lugia EX feels a little awkward, since it requires you to actively set it up and dedicate some deck space to it. I mostly dislike the fact that DCE does not work well together with most of the other Plasma Pokemon (I guess Absol's 2nd attack counts...) and the deck really needs to grab its colored Energy early and often in the game.
I prefer the consistency that Computer Search or Dowsing Machine bring to the deck, therefore I'd rarely consider to play Scramble Switch + DCEs + Lugia EX, which is basically the mandatory Lugia package. Smashing in with Lugia EX can definitely be game-changing, but it feels like you just flat out lose some games because of the fact that these cards are in your deck as well. It's a trade-off and comes down to preference. I'd never run 2 Lugia EX, mostly because you can only play 1 Scramble Switch in the deck and that card is the only way to make the card really work.
Considering the OP's lists, I'll say it looks very solid. I think I'd prefer the 4th Kyurem (or the 2nd Absol) over the 4th Colress Machine. You're gonna draw 1 of those Plasma Energies at some point, making the 4th Colress Machine a dead card in long games, However, using non-EX attackers is an extremely good idea in long games and I would up the odds for that happening as much as possible. I also like having the extra Basic in the deck. Opening hands with more than 1 Basic to choose from are usually a good thing.
I'm not too sure about the Max Potion, but I guess as a 1-of it can be a nice Skyla target. I haven't seen it in action enough to say much about it. A 1-of Tool Scrapper could also be nice to pitch all of the Float Stones in the format...floating around, I guess.
I would always play the single Keldeo EX, it's just very useful in many situations. However, if you do, maybe you want the 2nd Ultra Ball over the 2nd Plasma Ball to find it? Or maybe playing 2 of both Balls is correct in that case..I'm not actually sure.