Originally I was smoking the bc 5k, then the vpr 7k and now the vpr 30k. All strazz/ elf. The flavor stays the same but the taste is improved with each upgrade.
30k pros: long lasting battery, shows battery %, light turns from red to green when done charging, visible e-juice tank, adjustable hit strength.
30k cons: not sure if actually 30k (doesn't seem to last that much longer than the 7k), hard mouth tip (7k was soft do you couldn't hit your teeth), flashes through different colors of light cycle with every hit.
As for VaporDNA, only took 9 days for cross country shipping.