Well, I would say avoid the v1 mech telescope from SMOK. The v2 is a different beast entirely. The rebuild-able one, doesn't have plastic in the switch other than the insulator. It's a different construction to the original telescope. I have 2 (SS) of them and LOVE 'em. The cool part is that the head is removable as well. I am hoping they make a flat top head instead of all these damn provari knock off tapered style heads. These new ones don't have the same wobble problem with 18650s, will fit a kick in 18650 mode (a couple threads will peek thru), work with 18350s (some of the old ones didn't screw down all the way), and button is sturdier and has no plastic pin.
I'm primarily a genny tank user (AC9), so I am NOT a fan of that GG style pinky switch. I much prefer a bottom switch. And as much as I am not a fan of this SMOK telescope's look, I much prefer it to that unsightly marital aid look of the TEC Mod.
This is a great mech mod and totally worth the price. You can get it a couple bucks cheaper here at Madvapes.
The Rebuildable Vented Telescope, Stainless
cheers mate.