there are many here, but if you want to play safe, then I'd recommend
http://www.dickmansdesign.com/v5/flash/
http://www.bluedesignstudios.com/
http://wyldesites.com/
http://fdsign.com
http://wolume.com
you may end paying a little more, but the results justify the price and you'll usually make the difference in 1 or 2 weeks