Mystery
constantly upgrading...
I've always been a huge fan of the Optimus(realistic) Minimus 7's Amazing little speakers, cheap and abundant on the used market.Came in metal cases and wood.
http://images.productwiki.com/upload/images/realistic_minimus_7.jpg
I won't suggest them at this budget at all.

They are okay if their small size is required but anything slightly bigger from good brand stomps them like c#@p.
When people talk about Minimus 7's they always have their size in the context, otherwise meh...
I had 3 pairs and not for me.