I chose Lynx security as it was recommended by a friend. I phoned for a quote and the person that came to us was very friendly and helpful. A day was arranged that suited us for installation and the man arrived at the agreed time. Installation was very efficient and didn't make any mess. We were given instructions on how to use the alarm and installed the app on our phones, he made sure we were comfortable with it before leaving. We went away on holiday shortly after it was installed and it was lovely to have peace of mind whilst away, we could also check on our phones that everything was ok. I don't know how the price compares with other companies, however, I do know someone who had a similar system fitted by a different company, it was slightly cheaper but they have had problems with it since it was fitted. We have signed up to the service agreement so I know we won't have any problems. Overall a really good experience.