Well just bear in mind they are actually Everest 2020 now , as Everest went bust in 2020!
' we are nationwide ' ---- yeah and ?? lol, hows that a sales pitch lol
10 year warranry - industry standard ( but is under review as technically it doesn't have to be - long story! )
very good quality - yep everest windows are to be fair ... shame about the subcontrcated fitters who are on ' piecework ' so rush the job
we don't use cheap material s - nor do most UPVC Companies .. see above about subcontracted fitters lol
In a nutshell , as has been mentioned before , use Local..first and foremost they won't spend hours in your house trying to sell you something and secondly they are easier to get hold of ( obviously theres employed fitters, recommendations etc as well ! )
Only profile I would avoid like the plague would be Duraflex...Its awful! There are various ones out there Veka, Rehau, Deceuninck, Kommerling, Profile 22( now Optima ) , Eurocell NOt Synseal anymore as they also went bust in 2020