Main direct unvented hot water cyllinder

[Akustik]

Hi,

I've been quoted for a job from a plumber and he's quoting me for a Main direct unvented hot water cylinder.
Does anyone know if this brand is any good? The name makes it very hard to search for it online as it keeps returning results for "mains".

 

[muggles]

Main are part of Baxi, who also own Heatrae Sadia - manufacturers of the Megaflo & Santon Premier.