I have 2 LT's.. Here's what I'm using on both RIGHT NOW after a lot of experimentation. 1 has a 3.5ml generic Madvapes tank with their (smoktek) 3 ohm DUAL COIL Flanged cart... Using a Banana Creme juice 75/25 20mg DIY juice at 4.8v and works awesome! I did increase the size of the tiny cart hole very slightly and it wicks perfect now. Other one, a smoktek ego MEGA DUAL COIL Clear Cart from Madvapes with the ego-510 adapter... 4.8v High VG Grape DIY (I really like these carts.. I go to them when frustrated with anything else... they hold a ton of juice and just work great.. 1.8 ohm and work very well with my LT as well.. I'll argue this one with anyone that wants to....)
I am very happy with their performance and lack of hassle. Are they perfect? NOPE. Nothing is! ha ha ha
I find that my Tobacco mixes seem to be on my Provari or Box Mods... Just what seemed to work best for me...
Have fun with your new VV. It will be an important step for you in this journey. Just be prepared for little bumps in the road... you'll figure out what to do. Anything batteries/juice/tech is a pain in the ... for someone on some level... Just work through it... We can all critique what is the BEST of everything.. and whatever you're doing is totally wrong.. guess what, NO IT ISN'T. you may be using a juice that is slightly different in viscosity or ratio and whatever we say is non-relevant to your problem.
You're in good company and will learn a lot in here. Just apply the principles and some personal logic and you're in for a great time.
BTW, the ego-T was our most important 3rd step in the journey... If you haven't already made the purchase, seriously consider building a Madvapes VV box mod.. but, don't buy the kit.. look at their site and buy the separate components and sub a HORN button and add a slow or fast changing led, all from their site and tinker... Grab your dremel tool and a soldering iron and 1-2 hours later you'll have an awesome 2 battery VV that'll cost about $25 bucks with 1 set of batteries and be off and running.. just my 2 cents worth... personal arsenal, provari, 2 LT's, 1 5V box mod, 2 5V VV box mods, 2 gold rushes, ego's using carts (no more T Tanks, tired of the leaking), and happy as hell. More to come....

Now, order 2 sets of batteries no matter what you buy.. you'll be glad you did... else be watching instead of playing... 3 sets is better.. one battery will crap out and ........
Main thing, have fun and don't be blocked by the ego or envy factors.. Let it be fun and enjoy the journey and don't look back. Look forward...... Each step is important. Seeking better is OK. Get a Smoktek DC cart for you Ego and you may find you keep those ego batteries in play for a while as well! They do slip in a shirt pocket nicely as well... for those stealth vape moments in the elevator.... ha ha ha
regards and keep us posted!