I have the Coolfire 4 with the Aspire Cleito tank, but I just bought the Artery Nugget of course I have the 49er tank that comes with it but I want to try different tanks. Can anyone help me....I just bought the Nautilus x for my Nugget it works good just wanted to see if there are other tanks that might be better? Also if anyone has any suggestions for my Coolfire 4 which tank is a good one to try I sure will appreciate the feedback. Thanks so much!