what brake pads to get? canada

[apollo18]

hey guys! i have an 2007 escalade. whenever i drive off in the morning, it sounds like the rear brakes are squeeling, if i apply the brake the squeeling stops, however the squeeling comes to a complete stop/silences 95 percent after about a km of driving. I am guessing this is the brake pads for the rear. the truck had brakes done about 2 years ago but I dont know if the mechanic did BOTH rear and front or only the front. The truck still brakes fine so im probably only gonna swap out the rear brakes. The truck has 330,000 kms on it so I dont want to spend that much money on the brakes. Its a daily driver, but I dont drive it too much.  What brake pads/from where would you recommend I get them. I saw rock auto has amazing prices but I dont want to wait for them to get here. 

I called the local Chev/Cadillac dealership and they quoted me $67 CAD for rear AC delco pads, I called the GM dealership and they quoted me $80, he was saying something about advantage oem pads. Something along those lines.  Should I just pickuo the $67 pads? or should I goto a place like Canadian Tire or Napa, / a different part store to get a different brad/set of pads that might be better for a comparable price?

 

 

Thank you

[Nysr20]

I only used ac Delco when I had my Escalade I loved them