Karma:
The suggestions regarding the methods used by Richard Hardesty are spot on. Since you are close, look at subscribing to his journal, and better yet, attend one of his seminars, which are held in his home. You may not find the details on his website, but email and ask. I have attended, and believe that you will find it well worth the money.
Agaffer is most correct. When you step into Richard's listening room (other than seeing a lot of gear, elegantly placed) you would have no clue as to the professional level of the room you have just entered.
Check it out.....it is well worth your time.