Arboles, I know exactly what you're feeling. I had to move towns too as I nearly went bust. We were doing everything pretty good, our advertising was excellent quality but what happened over a period of 3 years was that the number of nubies (ads) tripled! But I did the math.
First of all you need to make sure you are doing the right marketing, if you are doing Yellow Pages (print and online), local papers, flyer drops etc. My marketing expense is approximately 12% of my turnover which is high but ok for us because we mainly do takedowns.
Then count how many competitor ads are in each category, get a ratio for number of ads per households. My search showed Memphis has about 250,000 households. So you get a number, the number of households per tree company that's actively advertising (toughest competitors).
Now your have to have a look at where you want to go, make sure there's trees though! Do the same math and if the ratio is better ... bingo, you'll get more calls per ad.
Don't forget to factor in the average income, your new accomodation expenses, and what the new advertising bill will be etc ... no good moving to a well wooded city full of pensioners!
These numbers should be easily found on the internet.
In my situation, where I was had more ads for only a 1/4 of the households and population than where I currently am now... And where I currently am has more trees and people earn more money. IT WAS A SMART MOVE.
BUT IF SOME-ONE IN THE BUSINESS ASKED ME I'D BULL???? AND SAY THE NEW PLACE WAS JUST AS BAD SO I WOULDN'T HAVE TO MOVE AGAIN! Don't believe everything people tell you, especially when it comes to money.