Zune.

Personally, I would recomend an iPod. Since you do a lot of exercising, I would recomend the Shuffle. Granted, I have no experiece with the newest one, with the controls on the earbud cord, etc, but I have the previous generation, and it's great for working out. I've had no problems with it skipping, etc, and it's small enough that it probably won't get in your way. Granted, you never know what song is coming next, but I don't have enough music for that to be a problem.

You also say you want a screen, which, unfortunately, is something the Shuffle lacks. From my experiece, however, having a screen big enough to watch movies, etc and also being convient enough to workout with are often times mutually exclusive.

Now, I don't know what you have against the newest Nano, but that would be my ideal suggestion for being able to watch movies and workout. If you don't like the shake to shuffle feature, you can disable it. I do a lot of running, myself, and I haven't had any problems with it skipping, or shuffling when I don't want it to.

I agree with everyone else who says that apple products are a waste of money.

Personaly I picked up something like...  http://www.sonystyle.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10551&storeId=10151&langId=-1&productId=8198552921665089308  that.  But I picked one up at best buy last year, and it played DvD's filled with mp3's as well. 

I found mine at 34.99, which is patheticaly cheeper then a ipod.  Runs on AA batteries so its power supply wont need to be sent back into the manufacturer to be replaced.  Shock resistant, and it scans 3 mins ahead into your disk so that playback is smoothe even if you jostle it around a bit. (Technicaly it will skip if you go over something thats violently bumping and lasts for 3 mins..).    The ones that play DvD's of course get to hold about 4 and a half gigs of mp3's, and works just fine on re-writeable ones. 

Anyway, it was a sweet choice for me because I can always pack a spare set of batteries for long trips where I wouldnt have been able to recharge an ipod.  The only problem is its not as fancy/sleek or have the status that the new toys have.. and of course you need a burner on your computer.

I got a creative zen mosaic, its well cool, and the battery life is insane.

You might want to take a look at these:

Cowon D2 (you can use it with a 32GB SDHC card, resulting in 48GB(!) total memory)

Cowon S9 (AMOLED screen; there's also a 32GB model)

Cowon players are better than ipods in almost every aspect (Sound Quality, Price, Battery Life, Music and Video Formats, etc.).

Samsung P3 and Sansa Clip mp3 players also received very positive reviews.

I agree, I think Zens are probably the best MP3s on the market. My ZenV has been going strong for 2 years already with only very minor problems. And they work with about any music system out their so you you want have to say start shopping at Itunes.

I think I am quite open. I've bought my fair share of mp3-players. Right now I own a creative Zen. Great lil' player. I also tend to like Iriver. One thing is for sure though, I'll never buy an IPOD unless I get one for dirt cheap. I just dislike how Apple pushes Itunes on their customers.

No, but I can recommend ice cream during the summer.