Aaawww, you have an adorable avatar. :D Welcome to PC!
Yeah, X and Y look pretty amazing. I'm undecided about my starter since I like all of them a lot; it also depends on what their evolutions look like. We're a very active community here so be sure to explore the X and Y board as well as other places that might interest you as you'll have a whole lot to talk about. :) I'll be getting X but the Y legendary is also really awesome! I'm glad to see you've done some exploring around our boards already, but with how excited you are for the upcoming sixth generation games it's a bit surprising you haven't dropped by there yet. You should tell us your opinion on the fairy type and discuss other features that were released so far.. there's a ton to talk about, though I'm not sure how our activity is in comparison to Serebii's. We're still an amazing and very active forum!
Since you have forum experience I'm assuming you won't have much trouble settling in here, but PC has rules that are different from Serebii's so definitely make sure to read through our rules, as suggested. One of the rules that members seme to miss most is the rule against bumping threads that haven't had a post for 30 days.. so it's best to read and understand 'em to get that out of the way, baha. But other than that, I hope you'll have a blast here and we live up to your expectations!
Have a wooonderful time and do private message me if you need help. I'm always around to chat anytime, too! All of our members are more than happy to talk if you're interested and you seem like a nice person so we'll welcome you with open arms. Have fun. :~)