Roof it Right is an excellent choice if you need some work done. We've actually used them twice - once when we first moved into our home to repair some more extensive damage (I don't think anyone who owned the home before us ever had it looked at) and again more recently since a few tiles had been shattered when we had our house painted.
Honestly, they go above and beyond to ensure you have a safe roof that is going to last. We just wanted a couple tiles replaced, but Jim also had his guys seal hairline cracks and re-prime our flashings to ensure our roof is in good shape. Plus their work comes with a two year warranty on workmanship.
Both times Jim and his crew were professional, fast and efficient. We'll definitely continue to use Roof it Right in the future.