Well, if he doesn't like the ego/clearo, then he won't like the Triton which is an exceptional ego-style battery with a improved T2 style clearo.
The G6 is the BEST alternative, with the appearance of a normal cigarette, ease of use and decent (as compared to a Triton/ego) battery life. HALO makes some of the best hardware when then make it -- lots of thought goes into them to produce a superior product. You can't go wrong with Halo hardware!
For a Camel like carto for the G6, try either Freedom Juice or Turkish Tobacco. Both have a solid "spice" to them similar to Camel's turkish blend. Torque 56 is a great analog replacement without that spice, but has a very slight sweetness to it.
HALO is a fantastic place to begin vaping, since their tech is above the average, and their juices are legendary for purity and flavor unmatched by many, many others.
Halo offers a great upgrade from the G6, by offering Low Resistance cartomizers, replacement juice, mini-tanks for a big step towards more aggressive equipment, and then finally the Triton Set for those seeking more power, flavor and (soon) variable voltage to control it all.