I've been thrashing a pair of Drakos for the last 2 seasons. A size 47 fit me well (12.5 street shoes). I've been riding in Sidis almost exclusively for the last 10 years on road and XC MTB, so I like the fit of the Sidi last. However, these are different to other Sidis I've tried.
The Drakos are all microtex pleather with holes in the leather for ventilation. This is in contrast to other Sidis, which have mesh windows built in to the toes. This has an important effect on the fit, as other shoes (Dragons and Tigers for example) are basically constructed as mesh booties with leather sewn on top; the Drakos are much stiffer in the toe box, and I was never able to get that "slipper-like" fit from them that I love in other Sidis. They feel very stiff, and are noticeably narrower and less supple than Tigers. The feel is like wearing a tight cast on your feet: It fits well, but is unyielding and some hot spots do arise.
Beyond that, there are a few points where I think Sidi lags behind other companies:
1) The Sidi "tecno 3" boa-type buckles are fiddly as you have to pop out the "handle" before you can use it, and the mechanism tends to get fouled with mud. And, you can't loosen them one click at a time, you can only fully release them. Both in contrast to the Boa system where you just reach down and tighten/loosen by turning a nice rubber dial one click at a time.
2) I find Sidi's carbon sole solution to be obsolete. The exposed carbon with bolt-on treads just doesn't work well, and adds user hassles. Specifically:
-Higher stack-height than other top end shoes
-No rubber under the arch, which makes both walking on rough terrain and pedaling without being clipped in (e.g. getting started on a very steep hill) super tough. The exposed carbon sole tends to get shredded too.
-Increased weight due to all that hardware
-Propensity for the screws holding on treads to loosen over time. I lost a bolt mid-way through a long race which led to one of the cleat-adjacent treads partly coming off.
-Most damningly, the threaded T-nuts that are permanently installed in the carbon sole to catch the tread bolts tend to come unbonded and spin when you try to loosen/tighten the bolts. Once this happens you can't easily change the treads any more, negating the "benefit" of the whole overcomplicated system. All in all this carbon sole has the feel of a first attempt from the mid-90s that should've been upgraded years ago.
WITH THAT SAID, I have not found another shoe that fits my foot or lasts as long (sole issues excluded) as a Sidi. Maybe I'm a victim of self-inflicted foot binding after my years wearing Sidis, but I just can't help but come back to Sidi despite trying many other options. However, I find the Tiger and Dragon models are much more comfy than these Drakos.