Lavatube is a fine, big battery VV PV. It lacks a few of the Provari features that may or not matter to you, such as-
- remaining battery charge,
- resistance measurement
- accurate output voltage, will tell you if you select something it is unable to provide
- 3.5 amp (vs LT 2.5 amp) current limit
- higher level build quality
- one year (extendable to 2 year) warranty
- very economical upgrade path
- stellar CS
Couple of those things are not exactly accurate, at least in all cases.
- Lavatubes DO provide remaining battery charge. With V1 version, you press the power button 6 times to display remaining charge. With the "so-called" V1.5 and V2, there is a bar type battery indicator, like on a cellphone.
-The V-tube from apolloecigs.com comes with a 1 year warranty. You can get it extended at Squaretrade.com to 3 years for $10.
-The V1.5 an V2 LTs have a 3.2 amp limit, same as the Provari. Only the V1 LT has the 2.5amp limit.
-The Provari tells you if you select an inappropriate voltage by going into an error mode. The LTs just readjust your voltage. If you stick with 2.5-3ohms, it becomes a non-issue with either unit.
-CS depends on the vendor. Apolloecigs has excellent CS, as do many other vendors. Like most PVs, CS doesn't come from the manufacturer. Provapes is a little different in that respect, but with a good vendor it becomes somewhat of a moot point.