The price is pretty much spot on for an equipped Bosch bike from a quality maker.
There are other similar open frame Bosch bikes, but it would be a nonsense to say a Cube or Trek is better - or worse - than a Bergamont.
Similar style and spec bikes from any maker will ride in a similar way.
It comes down to rider preference and method of purchase.
There's a lot to be said for buying from a local shop, same as buying a push bike.
I don't know your local market, but shops with a good selection of quality ebikes are thin on the ground, so another make might involve buying online or a long journey to view.
I've always liked Gazelle bikes, and if you want a Dutch style bike, why not buy a Dutch bike?
But the ride won't be vastly different to the Bergamont.
For what it's worth, Cycle Heaven in York keep a good selection of Gazelles, and they are decent folk to deal with.
Their main shop is fairly impressive and has a cafe, so if not quite a day out, it's certainly a good few hours out.
https://www.cycle-heaven.co.uk/products/bikes/by-type/electric-bikes?brand[0]=gazelle&performance=0&recreation=0&utility=0#bikes