Personally I think the 6h30 is a fantastic tube. In the ARC Reference 6, they sound neither exactly like traditional tubes nor solid-state, but actually sound more "right" than either (including excellent tubes like 6SN7 and 6922). Rogue Audio’s old top 6h30 preamps, Athena and Hera, have some similar sonic qualities to the Ref 6, just not as good overall. If I heard a 6h30 based component that didn’t sound excellent, my inclination would be that the stuff around the tubes is at fault. But perhaps I am just so positively biased towards this tube. I think it’s great!
I don’t have experience with the DR version, but have used sets of both the modern Sovtek and EH gold pins over the years - they’re extremely close in sound, and like Kevin of Upscale advises, "don’t stress over the difference". If you don’t like your gear with one version, you probably won’t like it with the other. If I have to order a replacement set tomorrow, it's literally 50/50 which I'll choose.
When a relay switches and agitates a 6h30 it makes a "ping-tassshhhhhhhhh" sound like no other tube, that feels like audiophile home to me 😂