I built one of my Goliath v2's with 9 wrap 2mm 26ga TI twisted with 30ga NI200 and also my Lemo 2 2.5mm single coil with the same build last week. I like the build and use it on the SXM on either the NI200 or Ti modes. Around 320F on Ni and around 540F on Ti mode using around 28J.I'm using the same TI wire everyone else is from UnkamenSupplies, excepting I bought to small of gauge (have 24 and 26 on order) the NI wire I have is from "Lightning Vapes" or "Master of Clouds" which I ordered off of Amazon. (it is not 'tempered' NI that I know of)
I did experiment this AM with wrapping TI30 and NI32 together. The result has the nasty springyness of the TI wire but has the lower resistance of the NI wire and the TI wire appears to help the NI wire hold its shape while wicking.
My "Anyvape" Sega atomizers are very small. Not sure if it is worth trying to see how many wraps of TI I can get in there. I put a twisted 30/32 Ti/Ni experiment in a Kanger Subtank with minor success, if I'm feeling lucky later I may try to outfit one of my Lemo2 clones with ether dual twisted coils or dual 28awg Ti coils.
I think what is happening with this build is that the 30ga NI200 which has much lower resistance is heating up the 26ga Ti wire where the Ti resistance is kicking in when the NI200 heats it up. The vapor is very smooth and steady temperature on the display.
In a few days I will be receiving some 24ga Ti and will try that twisted with my 30ga NI200 with the same wraps and build as earlier. My thoughts are that with the 24ga Ti and its lower resistance it will be more competitive with the 30ga NI200 resistance and cause the Ti wire to play a more significant role in the resistance and temperature curve. With this build I would suspect that the Ti mode would be a better choice on the SXM than the NI200 mode.
Another build that I am quite impressed with is a 2x 30ga Kanthal A1 twisted with 30ga NI200. Lots of surface area and works quite well too.