I own a detached home with 13 windows (some of them super-sized) and a patio door that needs shutters. Saw them being recommended on RedFlagDeals and called them. They came the next week for measurement and quote, was the cheapest among the 5+ shops I've got quote from (70% cheaper than some of the quotes). Their shutters come with 20 years warranty. After I paid them an initial deposit I waited for about 2-3 weeks before all the shutters were ready. Installation was done within a few hours during a weekday afternoon. My husband was home for the entire process and said they were 'pretty good'. The only thing was that they didn't take much care as to where they put their tools - one of the electric drills they had with them was placed on my bed when my husband went into the bedroom!
It has been 2 years since they installed everything and nothing has happened (*fingers crossed). Overall with the price I paid and the quality of product (not so much service as of yet) I got it is pretty satisfying.