I have completed my trip. The NRTWAW flights were very impressive, a good solid PE and worth paying the premium over Y
For the short hop to LHR, no special cabin, if you don't count a different color headrest cover. a old 737 but decent food.

Both flights too and from London were late and on the way my bag did not make the connection to London, catching up with me 4 days later, and they allow only USD100. Plus the communication
was awful.

I would use again, but only with a 3 hour min connection at WAW, otherwise too rushed and too risky, they seem to have no clue how to track bags even at home base. Try contacting them by phone , good luck.

I would say could be great, but needs some work