those rx8 on carsales gotta at least have been rebuild few times. contact em and ask.
like i said rx8 are more reliable then the other rotary. especially the rx7 FD will leave u stranded in d middle of d road, because of its being turbo as well
that car is like fragile, so beware.

thats wat my mates say. but depends on the rebuild u do, if u use some heavy duty parts out there it will last more than 20,000kms.

but in ur case out of the dc5 vs rx8.
i take the rx8 any day looks heappppsssssss better no offense to ozhonda people that own dc5.