Of the companies I invited to quote these guys were hands down the best. No hard sell,arrived on time every time and offered much better advice and explained things in an honest and technically knowledge manner rather than just repeating what's on the sales literature, giving the best option for the end user rather than just the highest profit. They gave me several options to choose from with benefits and disadvantages for each (tricky location in this case) which as a home owner and living with these for many years gives you the option on what suites you best. Like I said no hard sell and no pressure to sign today they do the figures and let you decide. As a technical sales guy myself I've got to say I'm impressed with the way they do business and the prices are competitive allowing a much quicker return on your investment