I choose Talisman, but of course love Rime. I based my criteria on this - if either of them came out on an album today, which would I go more ga-ga for? I'd say Talisman, because the bit in the middle of Rime, while integral to the song, makes it to me more like a symphony (second movement) and less a coherent song. More like Karn Evil 9, with distinct phases. As a whole song, I say Talisman is better. I love them both though and would put them top 10
Of course, I'm listening to Dance of Death as I type this, so the driving beat might prejudice me toward TT!