Straight Fairy builds to me personally seem like a one-trick pony meta dependent deck. The techy version is a lot better and can give you a whole better range of match ups.
The team who I deckbuild with, are in the process of attempting to make a solid fairy deck list for our up coming regionals as we're all deciding to take the rest of the year on a more casual note before Nationals, since the majority of us (cough I'm 2/3 there) already have worlds invite.
Anyway we are deciding on running a tech version that simply uses Darkrai EX, Yvetal EX, Aromatisse, Virizon EX, Landorus EX, and Black Kyurem EX. Our other team mate who is still trying to make worlds points made top 4 in the recent Tasmania, Australia, with a prototype deck list to that. Just some food for thought.