Cape Horn (another Ushuaia brewer) has a good set of craft beers too, including a very refreshing Pils. If I were to ever move to Argentina, it would have to be to Ushuaia. The cool atmosphere, good beer, beautiful mountain views, plus the wonderful smell of the wood smoke and slow cooking fuegian lamb hooked me.
I did try some beers from a craft brewer in El Bolson, but two of their products really turned me off. One was a too hot to drink pepper infused beer, and the other was an olive infused beer that was just nasty.