The LT is the proff that a cheaper, reliable VV could be made. For that, it does a wonderful job. If you want the best and cost is not an option, there are some options that are much tougher (such as the ProVari) and have a longer track record. My biggest problem with vaping...I go all pokemon and think I need to collect all the PV's. I choose you LavaTube! Could it be better? Certainly. Is it a great value for the money? Absolutely.
TotallyWicked has a great sale on them right now and for under 70$ you get the full kit with 2 batts. Not a bad way to check out VV at all! Complete ProVari Kit is ~235$. For me, 3 LT's would be the better purchase.