They are quite distinct looking from one another. I really like the warp nacelles and the impulse placement of that ship I linked. I havent seen one quite like it.
I agree, and the one I found is clearly a Sovereign-Prometheus kitbash, however I've already begun converting it to SFC3 in case anyone wants it, but when I tried to contact the author, my email bounced back.
Hey U.S.S. Phoenix, if you're reading this, is it ok if I convert this ship?