Hey there Eddierodriguez.
I would highly recommend Matt Gray at Matthew Gary Mastering. I used many big name Mastering suites and engineers for many years and was blown away by Matt's ability to maintain my mix balance. Most mastering I had used before would radically alter the mix balances due to heavy limiting etc. He has a great attention to detail and I would never use anyone else.
His website is
Matthew Gray Mastering ... the only dedicated mastering suite in Brisbane, Australia
Thought you might like an independent recommendation.
Cheers,
Scott.