Using multiple sources isnt bad. Its pretty good actually to have the ideas and thaughts of other instructors.
Offcourse you have to be open minded and realise that everyone has a different background in life and music and that might change the way they play a chord or a scale.
And thats the beauty of it. You will learn a way to play something here and think, hmmm I find it hard that way. Then you go to another instructor, school or website and someone teaches you the same thing but in a different way wich make it a lot easier for you.

I also use lick library, they got some pretty cool dvds there.
I will add one name to the equation :P
If you are into country, take a look at Doug Seven's dvds on coutry...and some jazz. http://sizzlingguitarlicks.com/
Very good and he teaches it well.