There is one REALLY IMPORTANT difference between Apple players (iPods) and virtually everybody else. If you choose an iPod you are restricted to downloading music from Apple's own iTunes service. If you choose one of the other manufacturers (e.g. Creative, Philips, Samsung) you will have the choice of many download services.
If your intention is not to download legally but to buy and rip CDs, then either will work for you.
In my opinion, having road tested both professionally, the iPod is all about form over function. Nice to look at, easy to use, but limited in functions. My choice would be to go for a high spec Creative player.