i think besides choosing brand.. you need to go to reputable shops that have good workmanship. i went to a shop in bandar puteri, well price is reasonable the heat rejection is good, but the workmanship is terrible.. 3days after tinting my windows already have bubbles (i did not wind down the window or did anything to the tints.. ive parked my car and did not use it for 3 days) im going back for warranty hope nothing bad.