***Synthetic hair differences***
Monofilament, or monofiber, is wonderful and usually found in wigs designed for everyday wear. It's the highest quality synthetic hair you can buy. It is very expensive ($20-$40 per packet), but it feels exactly like human hair.
Toyokalon, a lower grade of synthetic fiber that shows up in party wigs and some hair extentions. Wigs made out of this stuff are nearly always crappy and extentions, in all honesty are hit or miss. If you see a wig that is under $20, chances are its Toyokalon or a very poor grade of Kanekalon.
The best general purpose safe bet for braiding is Kanekalon (sometimes branded as Eleora). It has a lovely, silky texture and is easy to find in every color you can imagine. There are differences by brand, but you would probably only notice if you work with wigs very often. Eleora Kanekalon is treated with a Teflon-ish substance that keeps the hair cleaner longer, but resists many spray dying techniques. It feels like normal Kanekalon, perhaps a little silkier.
Hoped that helped!?