eHobbyAsia has got a unique high cap design in stock. The Lonex Flash Magazine has got a pull string (wire?) at the bottom. It function in the same way as the wind up keys on some high caps, I believe. Plus, the magazine feeds continuously once it's fully spun, so no more spinning a wheel mid game. However, I imagine you would look somewhat ridiculous pulling a string out of the bottom of your mag. It's even more conspicuous than conventional high caps. Here's a video:

I'm guessing that the demonstration is exaggerated, since I don't remember ever taking that long to wind a magazine. Regardless, it's interesting. So, what are your thoughts on how this compares to regular high caps? Better? Worse? Share your thoughts in the comments!