Thank you all again for the useful information, I think that I will happily spend my week end testing new printing software
Actually we use pronterface because is the most straightforward and it works reliably, but compared with Cura (and I think repetier) seems, in fact, quite limited.
I like Cura a lot, and I’m very courious about Repetier, but at the first try we are stuck about the “baud rate problem” with Linux. Probably this is a little OT, but any help will be appreciated. We start testing with 115200 because we have and read some problem of Linux (Debian and Ubuntu) to manage the 250000 that is a non-standard baud rate. But with this low baud rate we have some printing problems, missing steps and so on, so we switch to the highest standard baud rate that is 230400 that works with pronterface, but I’m not able to make this work for Cura. It is my error or Cura does not support 230400 that is sound strange, but the auto detection fail to recognize my arduino, so, to speed up development time we continue with pronterface, but I think now it is time to explore new ways