Go to the amateur fights in your area. See what gyms the better fighters are training at and go check them out.
Most amateur fighters fight local, so most of the fighter's gyms will be in your area.
MasterKiller is also giving you good advice you should take into consideration as well.
When given the choice between big business and big government, choose big business. Big business never threw millions of people into gas chambers, but big government did.
"It does not take a majority to prevail, but rather an irate, tireless minority, keen on setting brushfires of freedom in the minds of men" -Samuel Adams