I don't have this one on PC Engine so I've never played that version. With that said? I've got the European version on the Fekadrive. The intro alone made it worth the purchase, but beyond that it's a very competent shooter with an excellent soundtrack. It's also pretty hard; I've never been able to beat the game.
So, I watched a couple of levels of the PC Engine on youtube. Honestly, I like the Feka soundtrack better from what I've heard, but the music is still good. The cinematic sequences between levels though? I really like that they exist. Bah, now I want to track down the PC Engine version, play both, and post about some differences. As long as I'm at it, I kind of want to hunt down the arcade version too, but the single one I found on ebay appears prohibitively expensive.