Unfortunately, in recent years, I have found dealing with many electronics retailers akin to a similar torture such as "pulling out your fingernails with a pair of pliers"!

I think any of us who are on this forum will know within seconds of talking to someone at a retail store if they have any idea at all what they are talking about. My one piece of advice has "always" been is if the sales person starts knocking equipment they don't sell and obviously know nothing about, turn around and walk out the door!