Which would you go for? Anyone have more techincal info on these two products.. especially the estone unit which is lacking info, like can the HDD be upgraded?

I ask here because well.... this is the best place to ask

Yes I know all the benefits of the empeg which is why I'm sticking to it, however a work mate is in the market for a in car player, his top feature is removable face, internal amp so he can just wire it up to his factory speakers. He's not going to use the features of the empeg. He's also not interested in the mainstream units, i.e. Alpine, Sony etc