The new bikes are definitely different but you need a longer top tube. Pegs at least, hub guards if you are going to grind often. BMX parks are everywhere now. It still takes getting used to, not quite there myself but do like my new school.
As for older style, GT performers are classic. New or old, and reasonably priced for the most part, at least the new ones. If you really want to get a bike that will be your fit and probably retain or increase in value. Gary Turner (original GT) is back to hand building bikes. But also supposed to release a collaboration with GT this year. And Dyno is supposed to come back as well. Of course the old school grail is the Hutch Trickstar if you just wanna be cool. And Hutch is back too so you can build one. They average $2500-3,500 build. Might be able to budget build for less but who puts cheap parts on a Hutch. LOL. 24/26/29 are available as well.