In non rebuildable i'd go Kanger Aerotank or Aerotank Mega. In a rebuildable I'd go Fogger V4. DUAL COILS GOOD. LOL The thing about the aerotank is it will use the PT3 heads and will use the new Aerotank head that will be comming out with their new Giant Aerotank. The new head is a closed chamber a lot like the Aspire but it has a grove opening rather than a hole. And like is said it will use all three heads.