All three will done the job, unless you are planning on drawing a lot of amps with sub ohming or something. I use the efest red myself, I find them adequate for all my toys. The purple are the high amp ones suited to sub ohming, but are just as good for normal use.
Reds are fine for every day use same as these would be, tho if you plan on sub ohms on your mech sometime down the line then the high amp on the purples will cover your needs better.