Art style is pretty kewl (the Ninja's plane homing weapon is a throwing star

Music is good on the whole and hummable. The bonus mini-cd stuff is übercorny with japanese singing. Nothing I'd listen to but still musically solid...
Gameplay is pretty inexcusably boring for the first few levels. I got into the shmup 'zen state' but not till far later in the game, bringing me to the next con...
Length. Way too many fucking stages, each one longish. I'll probably make myself look like an arse when it turns out there's the same amount as any psikyo game...but the game seems too long for me, maybe because of the ease of the first half or so though.
In all I think when I try it out on a harder difficulty it will be pretty sweet.
Did Mediaquest develop any other shooters?
Also curious as to the differences with the psx port, I got the Saturn version...PSX version probably has better explosion sfx? Any other differences? I recall this as being one of the ones people listed as being better on Playstation.