skylight brands

Hi I'm am looking at purchasing 3 flat rooflights from rooflights-skylights.co.uk and was wondering if there's anything or any brand to lookout for. I know I want laminated inner pane and and aluminium frame. There seems to be the same specs in different brands and different prices.

Hi, I need a couple of Pitched Rooflights/Skylights, probably fixed (non-opening), and very approximately 80cm x 100cm. Velux are the market leader, so presumably rather expensive? Are there any alternative brands that are of entirely adequate quality, but cheaper? (Ubbink, Whitesales?) Are...