Houndoom's Mega Evolution looks amazing, I'm pretty sure its one of the best designs out there right now! I've got a Houndoom named Persephone and her megastone as well, but sadly I haven't been able to make good use of her in battles. The last few times she has battled haven't been too nice :(...
I never really liked Gen 5 much either :/. I don't know why, but everything just seemed really tasteless and clunky. I never even bothered to replay White 1, and I never touched Black 2 after finishing the main storyline.
I think the main things I didn't like were the characters and starter pokemon. The music was "meh" (save for N's and Ghetsis' themes) and I never found Unova that appealing in design.
Now like I said, Gen 6 was amazing. Good characters, good villain, neat new pokemon, music, and the awesome mega evolutions! I think Team Flare could have been better though, because most of it was just stupid members that dressed up in orange suits and probably only joined because the name sounded cool. The male characters could have also used some more fashion choices <_<...
But either way 6 was awesome!
I had Ruby for the GBA, and I personally like Groudon's design much better than Kyogre's.
Oh yeah, I'll have to think about the Facebook thing. It isn't that I don't want to add you, but the last time added a friend I made online my parents wweren't too happy. Terrible experience after that :(, but since I'm older now I don't think they'd question me much. I will PM you over this once I've come to a conclusion though!