never buy THE cheapest players there are, always think before you act
there is a reason these players are cheap
very cheap players mostly don't have instant start, aren't as shock proof, don't last as long, not as good quality,...
so what you are asking is pretty stupid, i don't think you know what you want, do some research first, read some reviews and then come back with your question
a budget and your needs for a player would be very handy