This is true for many services you buy from other companies. The reputation of a giant is likely based on the top people in that company and sometimes based on

This is true for many services you buy from other companies. The reputation of a giant is likely based on the top people in that company and sometimes based on the top people who were in that company years ago. Unless you are also a giant company you are probably getting junior people brought on to feed the pyramid. If you can find a smaller practice with smart people you will usually be better off