strange. dc5 and s2000 insurance is about the same for me.
I have to say, bar a better gear box and a prettier outer shell, there isn't much difference between EP3s and DC5s. anyone who says there is, is frankly lying to you.
sure the DC5 engine is tuned better and has slightly better components, but ultimately this isnt something you will notice when driving it on the roads and it would only make it marginally quicker against an EP3.
weight wise they are quite similar, 30kg from memory, again not something that will impact you massively and if it matters to you that much, take the rear bench out...
im sure stock dc5 vs stock ep3, the teg would bash it every day of the week, but a few grand on well chosen handling mods would easily bring an ep3 up to standard.
fact remains an EP3 and DC5 are similar enough. you would only be considering it for aesthetics, rarity and the steering rack if you're being picky.
suck it up and buy an S2000 if the car is in budget.
if it was me i would be driving all three to see which i prefered.