Yes, I have flown both a couple of times over the past few months to/from LAX. All flights on 350-900 aircraft.

I am a fan of the new seats on Finnair for sleeping, especially if you can get a bulkhead seat with much better space for your feet. But on the westbound flight on Finnair, it’s hard to find a comfortable position after a few hours of leaning on pillows while watching the screen.

ITA’s seats on the 350 are pretty standard reverse herringbone seats (these planes were acquired from Hainan Airlines I believe), quite comfortable and typical recline and footwells.

I have found the food and service on ITA to be a bit better.