Set is.. Exemplary, but not solid. It's lacking a lot of hard hitters or anything extremely notable. Most strongest cards IMHO:
Blaziken G Level X - Let the donkfests continue. You already control the field turn 1, then just level it up and nuke whatever for a lot of damage. Who cares about that extra 40? You have Poketurn if it gets too hot.
Absol G Level X - It sounds counter-productive, but again. Energy Gain, Dark Energy, Poketurn. Go. If it didn't benefit from the tools of the trade, then it wouldn't be viable, but 60-70 damage for one energy (and a discarded card which helps your Volkner's/Uxies/what have you.) is disgusting. The fact that Poketurn exists makes the power a little bit more viable too.
Emo Bird G Level X - Lack of supporters getting you blue? Need a Roseanne's Research to get your depressing looking bench up to par? Really need a Cyrus to get that critical Energy Gain to turn this game around? Look no further. Absolutely amazing tech. I'm sorry, to me this is a Holon Transciever every turn. and I see no reason to not have this guy in every deck once he comes out.
Garchomp (Non G) - Disruptive simply through its half-way decent and defensive body, its attack in addition to the second coming of Buffer Piece makes him a psuedo-wall with Kingdra annihilating capabilities (Oh-hi 100 damage for you only having one water on that silly Kingdra.), in addition to the fact that G Pokemon are most likely going to be running rampant (Energy Gain hates this in addition to their really low HP..), and lets not forget.. Oh-hi Garchomp Level X from Majestic Dawn making this guy happy.
Buffer Piece - I so happy.
btw, that Rayquaza Hype is silly. He really isn't that good.