Dear Chillhouse,
I bought a Keter High Store for CHF 416 from Galaxus and am very happy with it. Colour: light grey, no problems with assembly - lots of screwing as expected (not with the electric screwdriver, otherwise a thread is quickly overtightened or worn out.
For the differences to the Darren, I can only refer to the dimension tables and the colours:

Keter High Store
Internal dimensions 130.5 cm (W) x 176.5 cm (H) x 66 cm (D)
Outer dimensions:
Depth 76.6 cm
Width 140 cm
Height 170.4 cm


Keter Darren
Internal dimensions 130.8 cm (W) x 164.4 cm (H) x 66.2 cm (D)
Outer dimensions:
Depth 73.6 cm
Width 140 cm
Height 170.4 cm

Are these differences really real? It is more likely due to a slightly different conversion of the US measurements (inches) used by the alleged Israeli manufacturer in the original.

And I don't really see any real price differences either, because the price for this product keeps fluctuating between CHF 328 and CHF 404. Keter High Store "Price development".

Unfortunately, I have no personal information or experience with the Darren.

Good luck with the assembly and have fun afterwards,
Hanns

Hello,
The High Store has a rough, almost porous finish,
can be individually customised (painted)
Personally, I haven't painted it and there are no problems.
Best regards.