Ribbon/regular kanthal... .I think the difference IMO is minimal at best. I find that MAYBE you will pick up different notes with the same juice but even at that it is not a very big difference at all. I build daily. My favorite would have to be 28ga..... Has the most usability for what
I like to do including twisting two strands together is my current favorite wire...... I feel like ribbon can be slightly difficult to use AT FIRST when learning the ropes. 30Ga would be a really good first wire as well....
As noted from others, an ohm meter to measure a coil after built and on a atty is paramount IMO.... That will tell you if something is wrong...and if you are in the park you want to be or not.... Start off slow (I.E. higher ohm coils 1.3 or so maybe 1 ohm) than make your way down from there as desired.
When building common sense and "Your Gut" will keep you safe so listen to them...
Best of luck in you journey