My first e-cig was the DSE901. At top performance - great vape and great flavor. 7 bats dead in a month told me this wasn't working for me.
Loved my usb passthrough.... and realized everything the DSE901 could be was all I wanted.
The key was power. Consistant, every time I puff, no variation, not dead in an hour or a vape that's good followed by a crappy one.... while driving or outside no vape at all.
I bought a ScrewDriver. DSE901 attys fit on the one I bought and it's awesome. Bats last 6-8 hrs and only cost a couple bucks. Plus they're not DEAD after a week or two.
I've seen some awesome mods for sale at about $75 on the classifieds... laser pointers -and if I didn't have the SD I'd be really interested. They use the DSE901 and regular batteries.
Anyway -
I didn't have the money to keep trying a 510 and an 801 and whatever else 'looks' like a cig. They still use unreliable/short life ecig bats and the $$$ invested to try something with the same limitations was just not an option.
And to be honest - I have very small hands, the SD fits nicely and feels comfortable.
Because it DOESN"T look like a cig no one ever hassles me because they think I'm smoking. PLUS - for me the most important thing was replacing real cigarettes not having something that looks like one.
30 years of smoking...
Vaporized by my ScrewDriver!
I am afraid you are way too logical and performance oriented. For those most concerned about appearance, I think the old adage is: you can't have your cake and eat it too.
Good analysis, soupervapor.