What are there... Flygon, Infernape 4, Hippowdon, Alakazam 4, Luxray GL, Floatzel GL, Mismagius GL & Gallade 4.
Let's start with the bottom of the barrel.
Hippowdon, Floatzel GL and Mismagius GL
Hippowdon's Power might be a reason to play it. Power Spray stops it from being used again, yes?
Floatzel's Body might be good for a tech, but its attacks are awful.
Mismagius' Power might be good for moving those Unown Gs and Memory Berries... the attack isn't AWFUL awful... maybe it belongs in my next catagory.
Mid-tier
Luxray GL, Infernape 4, Alakazam 4, SNORLAX
Luxray's Power can easily be abused with Poké-turn. The attacks are decent enough, but I hate an attack that damages your own Pokémon... for 30. However, there are cards to get around it... Quagsire GL and Manectric.
Infernape has a fun Power with some decent attacks. Fire has been a risky type to play lately due to Kingdra; it'd be a OHKO for 1 Energy - not cool.
Alakazam 4's Power might be cool and tricksy, but its attacks are near useless. 30 or 50 for 2/3 Energy? Pass - not really worth the drop. I was all psyched up for this card to play it with Turtwig GL, but I don't think it's anything more than a fun deck.
SNORLAX WAS JUST ANNOUNCED AND COULD HAVE SOME HEAT ON IT. ATTACKS WHILST ASLEEP. ABLE TO HEAL ITSELF AND HAS DRAW.
Now, in my opinion, the most sought after cards will be Gallade 4 and Flygon.
Gallade 4 is everything a spread player wants in Power and attacks. You can abuse the Power with Poké-turn and ... well, that's enough, isn't it? Plus, it's a cool Pokémon that people have loved to play in the past...err.
Flygon says, "bring on the techs." Its Stage 2 from the set gives free retreat to anything as long as it has a basic Energy card of its type attached, welcoming all those techs you love to play but have those gross 3 retreat costs. It snipes for a OHKO to one of its treats - Dialga G LvX. It takes apart your opponent's deck turn by turn. People call it a n00b card, but it's the one I'm looking to grab, personally.
/story