Hello, my knowledge about portable music players isn't enough to decide... I need a portable player with mp3. I was almost ready to buy an iRiver Slimx IMP 550 but today a friend of mine started to talk about all the good thing of his Minidisc. I really don't mind much about the format (cd,md, etc), I just want to buy something really good. Soemthing that makes me say "i'm happy with this" not "I should have gone the other way".
My budget is about $150.00 and I care a lot more about sound quality, max. volume, bass control, good software, etc., over size and looks. I know that a MD is more comfortable to carry, and that the discs are re-writable, and that it doesen't skip, etc.. but i really don't know. I live in Chile and electronics here are expensive; I have the chance to buy it in the US and I want to make a smart buy. A list of pros and cons would be very useful Please help me to get decided.
All comments and advices are welcome. Thanks in advance.

wingo.