I currently have the mvp2 with a kayfun lite ontop. I'm looking on getting a better mod. Box or tube it doesn't matter. I was looking at a Vaporshark (DNA30) or seven30 (sx300). I don't want to sub ohm low yet, for that I'll actually but a mechanical mod. But I want something that will open up the potential of RBAs and RBTs. I'm open to others good mods out there.