yeah, if you're not all about the movies & pictures & other bullshit that the iPod's can hold, i'd just go for a cheaper MP3 player. they're smaller & seem a lil more rugged or at least more easily pocketed.
that being said, i've got an iPod Nano 2nd gen, but i got it for a nice price on Ebay. i've only rode with it one season but it's done good so far! and with my new helmet with the speaker ear pads!!!! it's tight!
Ive got two MP3 players. One is a Samsung cube thing about the size of a AA battery and holds 1gig of music. Its cool and compact, but I liked the idea of having movies, pictures, data, AND music all in one. Soooo, there was only one thing I could do.. UPGRADE! I went and got a 30gig Video iPod 5th Gen. I love this thing! I have my whole collection of Snowboard vids on it, couple of my favorite movies (most recently, "300"), 5+ days worth of music if played continuously 24/7 (not to mention 40+ days of music on my computer), and Pictures (trips, family, girls, etc).
The reason I saw the "need" for it was b/c I go on so many trips, the video and picture features some in handy for all the slow moments.
It won't be an iPod... I can't bring myself to buy one
If you are looking for something to hold more than music, the Zune's are sweet. Thats what I was going to get, but I opt not to b/c it was a brand new product and didnt want to deal with any glitches. I can vouch for the durability though. A buddy of mine has one and he crashed a few times directly ON to his and never had any problems with it.