What are the difference between these speakers?!?!?

And which one is better?







Altec Lansing BX1020 $15.99

http://www.newegg.com/product/product.as...



Altec Lansing BXR1120 $19.99

http://www.newegg.com/product/product.as...



Altec Lansing VS2320 $24.99

http://www.newegg.com/product/product.as...

What are the difference between these speakers?!?!?

The second one simply have worse customer reviews,



but the first has a bit higher power contained by wattage, the second one comes with a second jack for an Mp3 player, so you don't own to unplug it from your computer, and the third comes with a one year make warenty.



The price is mostly for the small difference in wattage (not really a problem within something as small as 2.0), and even larger for the design of the product.
how much you have to pay cheque for it that is the difference