I still absolutely refuse to accept "NeoGoa" (especially with that capitalisation) as a genre name. You can try to convince me otherwise but you'll fail. To me it's all Goa Trance. Period.
And as for "the first newschool track", it's exactly as difficult to define as "the first goa trance track". There was a bit of fluctuation around the turn of the millennium. Off the top of my head, the Ra / Electron Wave / Dimension 5 trinity comes to mind, and also Tranceform Records with Blissful Moments / Ethereal / Ypsilon 5. Astral Projection's Amen isn't really oldschool either. Filteria was among them too but I don't hold him in nearly as high regard as most of the scene seems to.