Anyone with ear gauges

I've just finished gauging mine to the size I want (0g, which I think is about an 8mm). And I was a little bit bad and I just kept the tapers in throughout the process because buying plugs seemed pricey, and nothing's too array.

Anyway, since I've reached the size I want to stay at, I need to buy some plugs.
What kind should I buy?
I've been told that I shouldn't use double flared to begin with for some reason, possibly because you have to stretch your ear additionally to get them in? I don't know.

Anyway, should I buy ones where the size is consistent throughout with o-rings or something?