Speaker advice - Definitive 600, Mirage Nanosat?

[MyBoyBlu]

I would appreciate some advice for upgrading my speakers. Going to buy a new 5.1 set. I'd like to set a limit around $800 for the set. I want to stick with small satellite speakers. These are for a medium to large living room.

Two sets that interest me (so far) are the Definitive Technology ProCinema 600 ($800) and Mirage Nanosat ($600). Preference, other recommendations?

Edit: I would love to splurge for the Definitive 800, but that may be out of my price range. Hypothetically speaking, would this be worth it? If so, what would be the next best option?

Thanks!