Brazil or Argentina?

I've got a free week in February, so time for a little relaxation. I'm thinking about Brazil or Argentina but I can't decide which. My ideal city is Tokyo because I love the service level at soaplands. Alas, A week is too short for a run across the pacific. Brazil looks like the next best combination of talent, service and cost. But Argentina looks a tad cheaper plus I hear Argentina has great steak. Any thoughts/suggestions??