Juanjo wrote:I'm no expert in lever machines.. so any input is more than welcome.
I saw that vids a few days ago on youtube (I think - can't see them right now, since I'm not at home). If I heard correctly you let the levers just "snap" - if I'm right: please don't ever do that! It's way too much stress for the group-elements - you will break something rather sooner than later, especially if you let the lever snap up without load in the portafilter! And THAT would really be a shame, since I suspect you wouldn't be able to get fitting spare parts.
So: when you pull the lever down, don't let it "snap" to its resting position but guide it there (although that should not be too much of a problem). When you release the lever from its resting position, lead the lever until you feel resistance before you let go. NEVER EVER let it spring back to it's upper position without the PF being loaded! That hurts!
Other than that there is not much difference to pump driven machines (besides, of course, the finer tasting espressi, ristretti, ...

), but you have less electronics to worry about. Only drawback with that machine: it has no HX, so you get the brewing water directly from the huge boiler ...
Regards,
Klaus