I go out with a Sigelei ZMax telescopic (flat-top) in 18650 config. with either a T2 clearo, a EVOD, a MT3 or a Protank and using a 18650 with those on top the device is HUGE but I love it so I don't care.,
Also, I just ordered a mechanical Zenesis 2 Carto Tank Hybrid and a Zenesis 2 DX-650...