I cracked my iPhone 6 screen and bought a Groupon from these guys to have the screen replaced. I brought my phone in and they worked on it right away and replaced the screen in about a half hour.
About a week later I noticed at the bottom left-hand side of the screen was having trouble. I had trouble typing the letter a consistently. I brought the phone back in and they replaced the screen again with no questions asked.
I dealt with the owner both over the phone and in person and he was pleasant and accommodating through the experience. I highly recommend these guys to fix your cracked screen at a fraction of what Apple charges.