I have the carbon sidi dragons. If they are a good fit for your foot shape, then they will be amazing. Some people find them too narrow.
The carbon sole is perfect. I have some gaerne shoes which are too stiff, it makes them crap for running in. The heel retention is excellent.
The sole replacement is pretty expensive and you cant replace the carbon insert.
The carbon insert can wear down pretty quickly if you are not careful. I wore my down in less than a year. However, as they are replaceable i just took them out and made new ones using vacuum bagging moulding technique. I also got rid of the plastic crew on sole and adapted the nut inserts to fit M5 rubber rugby studs.
I have tried, specialized (carbon road), gaerne (carbon mtb), shimano shoes (carbon mtb and road). Nothing like the sidi dragons. I have also had non-carbon sidi mtb shoes. They quickly end up like flip flops.
If you can justify the cost then get the dragons (or ruby slippers as an italian friend of mine named them), but get something to protect the sole
Thank you so much for your long explanation, i really appreciate it, as i would rather avoid the cost if it's avoidable. My finances are so so.
Thing is that Sidi's narrow shape suits me with no problem, and i will not be running on them at all. So an extra stiffness would be welcome. I also have an old specialized mtb shoes, with that extremely thick and heavy body geometry sole, which puts your feet like 4mm higher, but man, that's really really stiff, really nice. Loved them, but the upper is cheap and the toe box way too big for me... so back to the sidis, I guess the carbon sole can justify the extra cost, as long as the extra cost is justificable by itself. normal sidis run for about 150€ here in europe, sidi dragons for about 290€, 220€ sidi dragon 2 or dragon 3 in sale... With some effort i may find them for around 200€ a dragon 2 on sales... I hate available colours though, they are either all white or all white. A combination of both would be great... pity... I'll think about it. I will not expend such a big amount of money in an ugly color shoes... no way. I'll keep on thinking about it. i will check sidi website to see all colors avaialble. thank you and best regards. Any other tip from anyone else will be welcome too.