Donjr
I have plenty of recommendations. For music only - Sao Paulo. Great city, but that is all it is. If you want beaches, great scenery and music - Rio. Better still, a little place three hours outside Rio - Buzios. This has to be the most idyllic place on earth. Twenty three beaches, hundreds of restaurants, good nature, plenty of music for its size and very safe. Google "Buzios" for an insight - you will be impressed.
And if you don't plan on being there with a wife or girlfriend you will be in heaven - Brazil has the most beautiful women in the world hands down!
Anwyay, stay in touch with me closer to the time and I am sure I can help you when you start to narrow it down a bit, but you won't go too far wrong with Rio as an all-rounder.
Shipo - They don't have Target or Wallmart in Brazil.
Everybody else - I prefer to buy a well reviewed speaker. I really would like big Maggies but I believe they would fall apart due to the glue.
Aluminium is starting to look good - what decent (up to about $12,000) speakers, classics if pos, would fit the bill?