Exactly what I was going to say David -- pretty much you want Kanthal A1 -- i know they have some Kanthal pre wrapped wires with silica wick (and even some double and quadruple wicked pre wraps). Mainly, you'll just want to avoid welded wiring. kanthal is safe and produces a wonderful vape IMO. Welding is simply unnecesary for kanthal wiring. It heats quite well.
If you do decide to wrap your own - especially for a Pro Tank or something of the sort -- here is some great information:
Protank Cotton Rebuild, Way I Do
Protank Microcoil Discussion
There is some great information on how to wrap Tensioned Micro Coils that work great to replace the wiring inside the protank/aro/t3s coils. Get some 28, 30 or 32 gauge kanthal and some organic cotton balls and you're set! (a 1/16" and 5/64" drill bit are nice too -- a pin vise makes life even easier)... MacTechVpr knows as much about tensioned micro coils as David knows about everything else
Anyway, just stick with some Kanthal and you're golden to start. IMO, stay away from anything welded or non-kanthal for wiring. Never used Nichrome, just know that some people like it!