I'm a little bit confuse about all the different containers there are in H10 to make smoke/fire.

I'm wondering if pyro solver is supose to be substitute of the smoke container, since is ready to work with smoke and fire and it seems to be more clear than other container/solvers.

roll

Not a substitute, a convenience if you will.
The pyro tools draw on the component dops and do a bit of automagic to build a default setup that you can do by hand on your own.

So, for instance, the flame pyro tool, with a single click, setups the source and solver relationships, creates a set of data fields and creates the lowres and upres sop networks and builds a relationship between them.

Oks.

I'm not a newbie in Houdini. But I have always found DOPS a little bit messy. Maybe I need to work more with DOPS, but for me it's the more caotic layout S