Does anyone have any opinions on the the Duo vs the Duo-R/Duo-RX ? I know the Duo is notorious for failing caps, but I can replace them without too much trouble. Is there anything else I need to consider?
I have heard talk that the original DUO other than the bad caps is superior to the later DUO-R/RX models in certain ways. If recapping is no big deal for you, just get whichever one you prefer. I don't think they are vastly different. If you want a headphone output the original DUO has that while the DUO-R does not. I think the AV port also might be located somewhere different. I had a DUO many years ago but got rid of it when I started nothing issues with sound that may have been cap related, plus a general lack of games I was playing on it. I picked up the DUO-R later on and haven't had any issues thus far. You may want to add a RGB mod or S-Video mod to get some better quality video regardless of which model you get.
It matters not. Cutbacks were mostly aesthetic (plastics for example) so go with which looks most appealing to you, if you don't mind not having the headphone socket or having to do a cap job. The RX was the only one that came with a six button controller
Duo R/RX is more reliable . Duo's suffer from leaking caps and can suffer drive locking up. The Duo R/RX I think have a clutch system on the drive. I do prefer the Duo look though.
I would also add that if your getting a DUO-RX for the 6 button pad, don't bother. Unless your doing it for collection purposes, the gamepad is garbage in my opinion. :-D Get yourself a Hori Commander or Avenue 6 pad instead.
I had both before (r-RX) and the boards are exactly same hardware, the RX has only the latest rom for playback anything. You can also swap the drives from RX <> R. Maybe the RX has the cheaper caps but they should replaced directly when you get the unit (R or RX).