ahh the 80's
Both quite different..
very popular for the "nonlin" preset... gated verb thing eg s s s s s udeo by phill collins. and "ambience" preset good all round neutral verb quite dense. lexicon 224
sound of money...
"bright hall" think howard jones "what is love" and the frankie goes to hollywood stuff
generally a more plush reverb with more control. the 224
had a chorus / reflection thing going on which made it sound very wide..
think they economized on the 480 as it never had the same width
RMX definately a more dense sound..
(don't rule out the pcm60
for pure 80's slam and density)