personally I would browse the Hilleberg catalogue and find the tent that meets your needs and then look for a similar tent at a fifth or less of the price. It won't be as good but it will do the job, especially if properly pitched which I am sure you will. For instance, for me it would be the Nammtj 2GT (without a doubt) for my camping but I've had to settle for a Robens Voyager 2EX. But I'm not going to the Arctic and I don't have the extra £800.
PS I say this because I'm not sure what type
(i.e. format/configuration) of tent you want.
I know where you are coming from. And have no need to spend the price of a Hille. I won't be looking through their catalogue for copies though
and is it possible that in any case they copied some stuff/ideas from some others?
For my needs (non bike racing/non mountaineering) I tend to think both bikes and tents are pretty simple things and a bit of extra weight is no bad thing.
The type of tent I am looking for for this is probably the type recommended above - ie the much praised Zeph2 - as that design looks like it will go up quickly in maybe less than perfect conditions and if pitched properly shed wind very well.
That tent kind of looks like the Decathlon as noted above.
And your mention of your Robens got me thinking, for I rate Robens (have a Lodge2 which I love).
On my point (and yours) that a fair few tents look kind of similar, your Robens looks rather like my Vango Spirit 200+ and a look at the Robens page reminded me of a tent I had previously passed on as not for me - The Starlight 2.https://www.robens.de/en-gb/shop/outdoo ... tarlight-2
which of course looks not dissimilar to the Zeph (given up trying to spell it!) and the Decathlon.
It seems heavier than some but perverse old me sees that as a recommendation - for I will be on a bike and once it's off the bike I am just interested in it bearing up under wind and rain.
And I rate Robens tents - nicely made in my experience - and their mid-price tents (they do more expensive ones of course) seem very good value.
So a useful thread and thanks to you folks we have 3 possibilities.
Leaning towards the Robens when I can get a good price - one for the list for the autumn/spring sales maybe - can use other stuff in the meantime.
I am sure your £800 is well saved - that will buy a lot of tour enabling ferry and train fares - and camspite nibbles and plonk.