Yes, the EVO is limited in comparison when it comes to voltage change. Since the OP is new, my thought was it would be a little simpler initiation to variable/selectable vaping. And the limitations I am referring to is what resistence carto/atty you can use on the lavatube. If the LT's that are now being sold can actually use any carto/atty on the market and it keeps it's power setting constant, then that is a different story. I've just read many posts with complaints on those two issues. If those are solved, then I see it as an inexpensive initiation to variable vaping.
O.k. then. The complaints about the LT are nearly all referring to the version 1. The newer version 1.5 has a 3.2amp limit, so it can use any carto. It's a little bit below the Provari's 3.5amp limit. The even newer version 2, on sale already, has a 4amp limit, so you can use a 1.5ohm carto at 6 volts if you're dumb enough. The electronics on both versions are totally revised and, supposedly, hold their voltage, although I've only seen limited testing. There have also been some structural changes on ver. 2, with metal endcaps and the capability to accept protected batteries. At $70-75 for the full kit, they're definitely a good alternative and seem to be a good value. I've seen the 4 amp version for $50 for the tube only.