I bought this game a week ago. I beat it a couple days ago. (I TRIED to go as slow as I could though, honest

)
Absolutely the best in the series, and I'm surprised I'd say that. The ending brought tears to my eyes. So did some of the music-- particularly the Gym Leader One Pokemon Left theme during the closer fights, ESPECIALLY when I was down to my last two guys and I scored the Critical I needed to survive at the last second :'O
I caught that Bug/Fire Legendary, and the white dragon thing from the main storyline, but none of the others-- although Tornadus is at like 3% HP and Paralyzed, so next time I find it I'mma try a Quick Ball.
I also went through all four floors of Atlantis and
combed it dry for over 1.5 MILLION Pokedollars. I'm dead serious. If you can do all four floors, that's about how much profit you'll end up with. I had to cheat to solve half the puzzles though

The 3D scenes, like the Skyarrow Bridge, were
glorious. I think I cried a little there, too.
The one thing I DON'T like is that your two rivals are even more persistent than the infamous Gary Oak of lore. Ugh.

It's like, "Let's go save the world from Team Plasma!" "NO NO YOU HAVE TO BATTLE ME FIRST~" And to be honest I didn't mind it when it was Bianca because she is
soooo cute 
but it was still pretty annoying to wade through all the rival fights. Oh and Cheron is a badass. Maybe it's just the glasses, I dunno.

What I REALLY want to do now, though, is get into the WiFi scene. Competitively, hopefully. I'm raising a team to challenge others online and take on the Battle Subway(s) with, which is slow-going because of the complicated breeding techniques required (an Arcanine with Morning Sun, for instance, when neither Growlithe nor Eevee are obtainable, and getting a sure-fire deal over the GTS requires both patience and tenacity; to help with this, I made ABSOLUTELY sure that every fossil Pokemon, my starter, and the elemental monkey I received were FEMALE, so I can use them as barganing chips and make more of them later). But I'll get there. The only real hard part is coming up with a team in the first place, because there's so many awesome and wonderful options that it's too hard to decide.

The Battle Box idea is AMAZING. I can use it to make a team of more than six and switch guys in and out, long as I take into account which combinations work and which don't. So I'm stoked about that too.
Trying to decide on a good defensive battler now, and as much as I love Claydol I don't like his six-or-so type weaknesses so much, so I'm torn.