Ahh... in the end I took it!
Corsair k65 vengeance.
I found it on Amazon, for 60 Euros... it was used, but in very good cond. I only found 2 red dick hair...
It is in alluminium, it's sexy.
It's very responsive, it's lovely. The only problem is that is noisy, I basically cannot use the spacebar if my GF or my dog are too close uahuah it looks like a terrorist attack if I tap with that. But spaces work well too.
My previous KB was a g11, with space modded with elastic and other spaces modded with paper and replaced with smaller keys. It was good, I thought it was very good, but this is definitely another level.