The tip (on the left) that came with the GoTank isn't much taller than the True tip. The formers ID is slightly smaller, but because it is slightly taller, they toke about the same to me. They obviously
feel different due to their differing physical characteristics though..
Forgot to mention: That coil resisted about an ohm an a half, IIRC, since that's how most of my builds roll. The tip area wasn't hot at all, even with either of those two tips, which are among the shortest tips I have. 4 volts delivers a nice warm toke, and shortly after the battery only puts out 3.8 volts it's time for a new batt in the mech, and/or that battery (and maybe the RTA too..) going to one of my regs..