They look like nice clubs, but Epon will have to change their marketing strategy to give them a chance.
The thing with Epon (and other JDMs) is that they are niche for a reason (i.e. quality = cost) and can get away with minimum marketing exposure due to the particular market segment they occupy. People, such as those on this forum, hunt down the best and are 'happy' to pay the extra cash. Would the standard TSGer want to buy a new set of 501s or get the latest 503s (or whatever the 502 replacement will be)? If Epon are aiming at a wider market with the RF line then they need to do a big marketing push to explain to the average golf consumer a) who Epon are b) why they should spend more on the RFs compared to a USDM set. The particular niche (without spending marketing $) of people who know about Epon, but won't find a way of trying them (either by TSG new/classifieds/ebay) would seem to be an even smaller market segment than they currently occupy.
I'm not a hater, I love Epon stuff (I have 701s) and have nothing against the RFs as a good looking club. Just my thoughts..... :^)