Some N1kk1 F4t4|3 file, propably because 2 or something. Usually when I get really deep it feels like I'm floating and sometimes I randomly have a HFO just because if feels so good. But it has to be a pretty long file to get really deep, 30 mins at least. Kinda gets too addicting for me if I do it too often though. Nowadays I trance like once a month if that.