Terrible
Poor quality parts make this huge investment a massive waste of money. You're better off building your own or buying one from another reputable online retailer.

Very good
Very good controller. I have no Pop'n arcade experience, so I can't vouch for any arcade differencies. A bit loud, and a bit "hollow" feeling, but does not really bother, as controller sound isn't really much of a big deal in game like these -- where you mash the hell out of the buttons for two minutes. Only big thing for people might be getting used to the big buttons, if used to the small.

Good...
But a tad bit hollow feeling. Loud too.
Still an awesome controller though.

No title
Incredible controller. I started in the arcade and felt little difference between there and this controller. Much better than that small controller.