Yes it is a worthy replacement. The HRG RI absolutely kills and is as good, if not better than any vintage C+, depending on your taste (same goes for the Recto RI). If you prefer a more vintage flavor, the OG is your amp. If you’re cool with a slightly more modern sounding C+, get a RI. The bottom line is the RI is still a raw, vicious beast that’s 100% C+ and in no way sounds sterile, filtered, or polite like many modern amps.
If cash was a non factor, I’d still have both, because they are still different enough to justify that. In my case, I’m just as happy with the RI and the extra scratch.
As far as the ridiculous prices that the ++’s are going for, only a fool would spend more on a RI than what the OG’s are going for because “mEtAlLiCa ++ dRg.” It’s a $5.00 mod ffs and pulling the treble and bright knobs will get you close enough as far as saturation and additional gain go. If your amp is on Mike B’s bench, paying extra for the ++ mod is worth it. If it means spending an additional $4k plus for a RI to have it, fuck to the NO.
A C+ RI can do the scooped OSDM sound all day long and then some. I sold my VH140C because my OG ++ could nail that tone and do it better, with more punch, aggression and far better clarity.
If you’re considering an HRG RI for Metallica and OSDM toans, I can say with 100% certainty that you should do it ASAP.