i just bought an 80gig ipod video. the thing is great. first off, i encode all mp3s at 320 kbps average (VBR) and although i could hear a difference if i A/B them with 16/44.1 aiffs or wavs, the difference is so subtle that i dont put on my ipod and say "geez, this doesn\'t sound so great." 128kbps on the other hand sounds like trash.
i just bought the thing, so i\'m still importing. i\'ve got about 7 days worth of music totalling only 15 gigs or so of the 80 i\'ve got available. so i don\'t think i\'m going to run out of space even though i like higher quality compression.
as for fm transmitters, i\'ll ONLY ONLY ONLY use one in my dad\'s 87 corolla which doesn\'t even have a tape deck. get a tape adapter or use an aux input if available.
i also like the whole video thing. to have every episode of the office at my fingertips makes for a nicer commute to work.