Can't help you there I'm afraid, not with personal experience. From what I vaguely remember of aviation trip report videos on YouTube, Level and Austrian are decent enough. I certainly don't recall seeing anything overly negative.
It's less than 60 hours until I'm back in the air on my first 747 to LAX!
Does anyone here know if it's possible to have a photo next to the LAX sign on the way into the airport? It's silly I know, but it's a bit like that Emirates A380 ad on the roundabout coming into Heathrow, it's just a bit iconic. Just a 'nice to do' if there's time.
Of course there's also some 321neo flyage to be had to Krakow, and that promises to be fun too.
Sleeping for the next few nights won't be easy, I've not yet checked in (Tuesday's job at 1035!) and once I do I'm going to be bouncing!