Jerboa, IMO. The UI is acceptable. There aren’t many bugs. It’s updated with good regularity. Because it’s the most common, it’s also the most supported. It may not be exciting, but it’s pretty set-and-forget as far as configuration and troubleshooting goes.
Don’t know about the Spain part, but midazolam is the most commonly used sedative in French ICUs per https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3751696/ .
Midazolam might have been called by the brand names Versed or Dormicum.