The gearbox feel between the 2 are the same, nice and short, tight throws the DC5 does have better ratios though. A friend of mine has a DC5 I have an EP3, can't give a performance comparison really because he's running DC Sports 4-2-1 and catback, Teg m, plus Mugen suspension and he's removed various parts for weight saving etc, I'm running a custom catback and just fitted a FC Design airbox kit so his is quicker than mine, not sure on standard one's but I would say the DC5 would be quicker.
Plus the DC5 has a LSD, it's more of a drivers car, but some would say the EP3 is more practical.
Depends on what you want, two great cars. If I got rid of mine and was going to get another I would consider a JDM EP3.