Crank vs. Shoot 'Em Up: Better Film? Better PQ?

[BanjoBob]

Looking for some help on this one. My 16 year-old nephew just got himself a PS3 to join our little BD universe and has asked me for a disc for his birthday. I know he loves the kind of films that Crank and Shoot 'Em Up are; campy, violent, frentic, etc. In researching what might be best I came across these 2 as finalists and am going to get him one of the two, but can't decide which.

Both flicks have their ardent followers/promoters and as it turns out through my reading and looks at screencaps, both seem to contain reference PQ as well. So, I was thinking I buy both, give him the one that he would like most as a movie and keep the other as a demo disc. So, my simple questions are:

1). Which movie would get your vote as better/more fun?
2). Which would get your vote as having better PQ on BD?

Thanks in advance...