RSX should be replaced by S2000 on your list...and the SRT-4 should be replaced by a STi or EVO...and as far as a reliable daily that is fun to drive I'd pick the S2000. Mainly because I've driven a 350Z and it felt like a plastic box that had a small hole for me to look out of the front in. I've ridden in a S2000 and it felt really good. I don't know anything about RX8s other then why waste your money on it...and the STi/Evo would nearly tie with the S2000 on my list.