He might like a Provari. The company closed its doors recently, but you can still purchase one from here: (the only man color they have left is metallic bronze, and they don't have any matching extension caps left)
AUTHENTIC ProVari 2.5 Variable Voltage Mod People swear they can get run over by a truck, dropped a million times and still keep on ticking.. they are American made, and a good investment while you can still purchase one. (The link has it for 107.50 with free shipping, shipping insurance is an additional 3.99, so it's not bad, I just purchased from there last night)
I also liked the iTaste 134 mini, it's cool looking and inexpensive... the only real drawback I found was that with mine, after not vaping for a few months it stopped working while in storage.. but I loved it and had no problems with it prior to that. They are very sturdy, for sure.
Innokin iTaste Mini 134 Starter Kit (I've not done business with that company, so I know nothing about it.. but it's a good price, and you can find them for good prices.)
The only drawback to the smaller battery sizes is that you run through batteries more often, I was going through 3 batteries each 24 hour period when I was using it full time. To go along with either, you need a nitecore charger, and batteries.