To each their own & thanks!

I personally would rate it 10/10, just because it's an adrenalin rush that I haven't had in a game for a loong time. Every stage takes numerous lives and continues just to figure out a good pattern in which to beat it, and there is always something there that you didn't notice waiting to fuck you up. Yes, it gets very frustrating, but that frustration drives you (me, anyway) to keep pushing and keep trying to find a solution to the problem at hand. And after losing the battle 50+ times, there's nothing more rewarding then finally beating the fuck outta that bastard who's killed you countless times.
Plus, the soundtrack was kickass. And once you figure out how to beat it, it's an EXTREMELY difficult challenge doing it on one continue, let alone 1 life.
Makes for amazing replay value, in my eyes.