got some info
I called the Apple Store and spoke to a lovely woman named Irene.
She told me that she is almost positive the only difference is the HP logo.
I asked her about if the scroll wheel glows on one model and not the other, and she said when any 4G iPod is backlit and in the dark there is an orange glow on the buttons (I don't know, I've never seen either the 4G ipod or hpod).
She seemed sad not to get my sale and said you can get it here for only $269 (I'm a student), and I said I'm sorry I can't give you the sale but I am gonna go with the cheaper price if the hardware is the same, plus I don't have to pay sales tax with buy.com.
She must have quickly looked at buy.com because she then said, oh I see they're just taking preorders, I can ship it to you right away. She was working hard for the sale.
I apologized and told her how confusing this hPod deal is, and she started laughing and said it made no sense to her.
As far as compatibility she thought they were "PC formatted" but that as soon as I plugged it in, it would format itself. I don't know what that's about, so anyhow, I am now seriously considering the hPod from buy.com (which ironically had a competing music store before, right??)
I might wait till the 31st though to see if there is something else I should be (or want to be) spending my money on.
Ciao.