I read some of the archived threads on the B1500. However, I am having a hard time finding some concrete comparisons between either of these heads (750 and/or Glock HR). I currently have a CA9/Demeter rig I was thinking about replacing with a used DB750. If I had to buy a 750 new, I might opt for a Glock HR (that is why I included the HR in the topic) since they are both around $2K new. However, I am mainly concerned with the comparison between the 750 and the 1500. Does anybody have any real world experience with the 750 AND the 1500. Thanks!