I know it truly is a matter of opinion nutty I'm still curious as to what each of you prefer. Not rba's just a nice tank instead of my boge cartos. I'm too busy anymore to fool around with building. I would prefer to just unscrew the old atty and put in a new one. I have a protank2 and a couple of mini vivi nova's. I definitely favor the vivi for taste and vapor production. Any suggestions as to what to try next?