depends somehow of your lifestyle. Brickell is an office, event and nightlife place.
If you perfer more calm, nature and water, there is a very nice area close to OMNI.
Centrally located (10 min to the beaches, airport, Brickell, close to the Performant
Art Center and Biscayne Blvd, the new sparkeling mile with shops and restaurants).
You can take the (free) metromover, from the OMNI-station straight to Brickell.
And you have there a beautiful parc, Biscayne Bay and a prestigious address,
specially if you have family and pets, the best area to live right now...
Check out in Google: North Bayshore Drive between 17th and 20th Street.
I am happy if I can guide you, since I came from Europe as well and did all this
recognition job already: Hansklemmre@gmail.com
Best to you HANS