A buddy and I had a race to see who was faster. Me with the stripper clips or him with the mag. I won but his mag held alot more rounds. I have a 20 round attatched mag and love it.
I found stripper clips to be a marked improvement. Frankly, the detachables are a pain compared to mags that are built for the purpose, like ar15 or ak.
Stripper clips are easy to use. you just need to practice a little. If you buy any try to get the real deal surplus ones not new after market. I don't know why but they work much better and can even be bought for less at the right gun show.