Im gonna throw another yes vote for the MVP. Cant beat the price for what you get in the kit.
As far as tube mods, I have a Sigelei ZMAX telescope. I have shorting issues when I use the 510 threaded tanks like the one it came with but when I put my EVOD tank on there (ego threads) it vapes like a champ. Very portable in the smallest configuration and the 18350 battery gets me through my work night.
I am a big fan of Innokin products. In hindsight, I should have bought an SVD instead of the ZMAX.
To ease the pain of my defective ZMAX, I bought an Itaste 134. That thing is a beast! Its a simple device in regards to the lack of digital screen or any other setting option other than wattage setting but its my current favorite Mod. Its not practical for a pocket carry though due to the size and weight.
as far as tanks go, I like the protank2, my fake protank1, the EVOD and the VIVI Nova is doing a good job as well. Your experience may vary with any of those tanks.
Good luck, and Happy Vaping