Thank you! The three sets of blue poles are all the same length/diameter and the sleeves for them are clearly marked on the fly sheet. The purple one is for a little porch and it also has markings for where it's to go. The inner wasn't all that hard to put up, it was the fly that was giving me big problems in the wind.
I'm wavering again as aside from the all-in-one pitching, I wanted a porch big enough to cook in and store gear. I am the only one in the tent (it's not large enough for two people, unless they are very tiny) and I brought my clothes etc. into the inner beside me but it was cramped. There is a little porch in the Storm but it's not big enough to be truly useful, and we did our cooking inside my friend's campervan. I'm not after a massive heavy tent but space and comfort is far more important to me than being ultra-light - the tunnel style of the Spirit 200+ seemed ideal.
I don't know anything about Robens but this seems just the ticket:
https://www.worldofcamping.co.uk/robens-trail-voyager-2ex-tent?nosto=nosto-page-product1
The disadvantages of all in one pitching were highlighted earlier.
Having purchased a tent myself where all in one was an important factor, i wouldn't make it an important factor again. In fact, I'd make sure that it was easy to remove and attach the inner.
The cooking/storage space is also important for me.
The Robens you've highlighted above will certainly meet those requirements.
The disadvantage of a regular Tunnel tent is that they are pitched into the wind, so to cook in the porch you're relatively exposed - especially in the foulest of weather. Your Robens (above) seems to have that covered with the side door.
My first impression is that it's very big for 1 person - but that's what you want!
There's certainly lighter tents, but you're not worried about the weight.
Tent anxiety is a terrible thing!
Personally, I wouldn't worry too much about poles unless I was going to be away for a long time/away from civilisation, then I'd consider an upgrade or picking up a couple of spare sections. My unscientific view is that a lot of pole breaks occur because a tent is pitched incorrectly or not guyed out properly.
Very few tents go up easily the first time. A bit of practise helps - a lot. There are lots of inner first tents - you can't be the only one with this problem.
At the end of the day, though, the tent should do what you want it to do. If it doesn't, then it's time to look at a new tent.
Just to throw something else into the mix if you are looking at a new tent,
In tents that are fly first, or all in one pitches, it is possible to "drop" the inner (or part of it) to the ground, increasing your usable space under the fly for, for example, cooking.
When you've eaten & cleaned up, put the inner back up.
You've got space for your gear under the fly, can cook, then put your bedroom into action.