What are the differences between Nexus R32, RB7, RB8, RB7pro etc?

[60PlusWinger 82]

I know there are multiple codes for Nexus 1000s and I've heard that RB8 is retail Nexus 1000 which is the closest model of the G3 concept Bauer wanted to move to the consumer but what are the differences between them?

[lassek20 1]

Im also curious. I just got a john Carlson nexus8000 with the R32 code.

[60PlusWinger 82]

All those codes are Nexus 1000 codes. RB8A is retail nexus construction/blade etc but I don't know the differences between that and the others

[AmeriCanadian 3]

I'd also like to know because I have a wideman rb7 and just love it to death. Just as I did my original 1000 before it finally crapped out.