Hows the runtime?
If it is only 90 min (like they say), I would try to get the long German one, which includes a few extra scenes and runs 93 min in Pal.
The extra scenes are in weak quality, but so you can easily see what was cut.
But attention, there are more different German DVDs of Boot Hill than sinners in hell.
I know there was a cheap and bad Italian fullscreen DVD with 2 more min.