OP
Well, I ended up going with the HOG D2/Classic set. They arrived last night, and took a few breaths, and it seems fine. Overall build quality looks good. It's annoying that HOG won't sell service kits or share manuals with anyone who hasn't taken their course, but it looks from the schematic like the first stage is exactly like the DGX D6, and there are other sources for kits. The Singler manual archive includes a manual for the D1, which looks the same.
I'll take them in the pool next weekend and see how they breathe underwater.
I agree re: interest in DGX XTRA. Are they noticeably better that the D6? I might consider getting a set of those for my next purchase. It's a little concerning that the D6 second stage has been on order for a while now. I hope there aren't supply chain issues.
Off topic question, does the D6 designation have any relation to Deep6? Similar design? Mere coincidence?
I'll take them in the pool next weekend and see how they breathe underwater.
I agree re: interest in DGX XTRA. Are they noticeably better that the D6? I might consider getting a set of those for my next purchase. It's a little concerning that the D6 second stage has been on order for a while now. I hope there aren't supply chain issues.
Off topic question, does the D6 designation have any relation to Deep6? Similar design? Mere coincidence?