I would also recommend the 125 Años over the R4 -- if nothing else than for the age and price -- $2000 is a lot for a 1998 guitar, if both instruments are in similar condition. If you can try them first, then of course, buy the one you like the best, but if not, I wouldn't hesitate to buy the 125 Años, as they are, by all accounts, known to be exceptional guitars.
I happen to own a 4E, which is similar to the Años (as Philosopher guy mentioned), and it's a fabulous guitar. As Jacek noted, the cedar top is much more typical for the Ramirez guitars of this era than spruce, so that, too, would incline me towards the Años.
Whatever you decide, enjoy!