Need an MP3 player... recommendations?

[BigRed]

Ok. So my birthday is coming up next month and it seems about time I finally asked for (and hopefully, receive!) an MP3 player. I was hoping that many of you out there have them and can recommend some over others. Right now I'm looking at the IPod Nano (4GB) and the SanDisk Sansa e270 (6GB). Tell me about others or tell me about these! Here's what I have/need as far as use and features:

--I have over 60GB of MP3's right now, but I don't care if I can only carry 4 or 6GB with me at a time.
--Prefer flash over hard drive so I can use when running, mowing the lawn, etc.
--I'm a techie for a living, so it doesn't have to be the easiest one to use. (Though I don't want to spend 20 minutes to find an album or a song everytime either...)
--I'm only going to be using it a PC (running Windows XP).
--Would want car accessories to play in the car (and charge in the car, if possible).
--I haven't used any services yet (like I-Tunes, Napster, etc.), so I have no preference to one over another... yet.
--Video is of little importance to me, though I can accept it as a feature of a device.

I feel like I'm missing something, but I can always add it later, or you can ask me questions if I'm forgetting something. Thanks for your help in advance!