eGos, Rivas & H16s are all great, all vape about the same. Battery life
is an issue,
especially if you're a vapor maniac like me. I go through both my Riva 750 mAh's every day, and sometimes have to fall back on my 510s when both are on the chargers. If I had it to do over, I'd get the Mega eGos that have nearly twice the battery life.
The only problem I have with the H16 is the proprietary cone/atomizer. You'd have to do without it if you wanted to use a LR atty, which you do--even if you don't know it yet. The H16 looks a little funny without the cone.
Then again, if aesthetics don't matter to you--if you wouldn't mind using a PV that looks like it went together in someone's garage, you seriously ought to think about a Little Sister:
Box Mods
It's really a great, well thought-out little multi-voltage device.