I have 2 PV's atm, #3 coming xmas.. MVP 
  Anyway I have a Inferno which I think is 3.4v and I have a VV LT..  Now the cartos I have are almost gone so tomorrow I plan on ordering a few boxes..  On my LT I rarely go above 5v but I do with juices like Chocolate chip but most of my juice is fruity so I stay at 4.3+ for those.  I use tanks btw.  When I order cartos what ohm do I want for my Inferno and my VV LT?  I want what everyone is looking for, think smooth hits.  And I don't know if I want LR,HR or SR cartos.  When I get my MVP I plan on trying the Kanger 3's.  My main concern is getting cartos that I would like for the 2 Volcano units I have now.. I think I'm using a 1.5 ohm on the Inferno and I know I use a 3ohm on the LT..  Since I'm not cranking the LT to 6v should I get a smaller ohm for it?  Would I notice a difference?  Like I said this is the 1st time I had to make a purchase for cartos..  Now with my Inferno I think I'm using a 1.5 not sure if its a Dual coil or single, But I wish it would hit a little harder..   Now I need advice about company's.  Boges or Fusion 510's?  Never tried any of them..  I know this is a trial and error for noobs but I want to cut corners to save $$, I listen to others opinions and take them until I find what I like.. Just don't want to throw $20 out the window like I did last week with the Vivi Nova.. OMG that thing sucks...  Cant get it to work.  Thanks