How to contract a roofing company?

[Jack B.]

I've had several quotes, most of them for the bottom of the barrel shingles with terrible reviews and class action settlements, with absurd prices, especially the ones that know I have a few properties...

They wanted to charge me 12K for CertainTeed or IKO shingles known for their issues, with a one year warranty (one had 10 year warranties). 

I found one roofing company that has all 5 star reviews and will use top end Owens Corning shingles with 5 years labor, for 8K, everything included. They would like a 50% deposit.

The guy I'm dealing with is clearly not from here, although he can speak English well enough, he can't write very well and they don't have a formal contract though they are willing to sign one I put together. I have a one page thing I found online a while back, but I figured I'd ask the experts how best to handle this. 

I've asked if they are licensed, bonded and insured, and they say they are, and I told them that I will need copies before I sign a contract or pay a deposit. 

Their reviews are really good on google, but you never know, they may have had some of their buddies who can write leave glowing reviews. No BBB complaints that I saw.

Basically, I want to hire them, but I need an air tight contract. If you have one please share. Other than the contract situation, I feel better with these people than the other companies. The other companies were trying to sell me bottom of the barrel shingles proven to have issues. These guys are using Owens Corning which is the #1 rated and highly reviewed.