Need an optional portable monitor for your laptop, wow... This boombox is amazing for checking your mixes.
http://www.amazon.com/dp/B000I674IC/?tag=r06fa-20

I just wanted to know what kind of portable audio player that you guys use to mix with. (you guys meaning professionals) - I am wondering what works well..I am in the market for one so please leave model numbers if possible. thanks for the help.

My question is simply this...what type of processing, if any, do consumer music systems use to try to make them sell more than their competitors? And how do you as mastering engineers deal with this, as presumably you need to try and make any recording sound as good as possible on any type of system?