Decent flash-based MP3 player?

I have both a 5th Generation 30GB Ipod and a Shuffle I bought last week. I've been very content with the Hard Drive player thus far (it takes a lot for it to skip...mostly it only happens when you go to replay a track and it can be corrected by going back a track, then going forward to the one you want), but I do have a 3 year extended warranty as a solid back-up, since I hear their life expectancy is about 2 years (and I run mine about 8 hours a day, six days a week).

I decided to get a Shuffle for several reasons:

-I needed a flash drive anyway.
-I know my music without needing to read the tags and my iTunes files are well organized.
-It was cheap (about $70 for a 512 MB at Walmart...Probably better deals online, but I preferred to buy from a local store if I needed to do a return. I'd much rather have it get stolen than my $300 5G in a worse-case scenario)
-I can take the strain off my 5G Ipod since I'll rarely need more than 512 megs of music at a time between charges and the "Autofill" option in iTunes works great for me.
-It actually sounds better than my 5G Ipod. See here (there is definitely a "fuller" sound in the Shuffle):

http://www.pcmag.com/article2/0,1759,1778968,00.asp
-It just looks cool and it's puny. I could fit three of them overtop the 5G, which is small enough to begin with. It comes with an attachment so you can wear it around your neck.

As is, both will have their uses and are pretty versatile, depending on the situation.

Compared to either, I wouldn't consider the PSP as a music player. You have to buy memory for it on top of the unit's price and it'd be too awkward finding a way to set it while listening. Both Ipods fit right in my shirt pocket.

Jam it back in, in the dark.