ongoing squeeling brake issue, help !!!!

Zeetah

my car has about 30,000 kms, 2012, base model. it squeels on and off at a stop near lights and stop signs and squeels alot on the highway, i tried that method, i forgot what it was called, but it didnt work. 1 shop checked it out and just suggested i replace pads AND rotors, but i had a ton of pad left they said, they cleaned out the groove, noise went away for a week and came back.

called nissan just now and they quoted front pads $112.15, rears $111.56. rotors front $124.81 EACH, rears $132.95 each, and those prices are before tax.

any suggestions on what to do? i dont want to change the rotors if i dont have to, but i also dont want to pay twice for labor, but it shouldnt really be twice for labor anyway since it would less time if it was pads alone and then rotors later if i the sound was still there.

i also want cross drilled and slotted, especially if i have to replace the rotors, but not sure which brand and i dont want to spend a whole lot if i dont have to.

looking for shop or places in the GTA/toronto