Currently have a Mercedes A-Class AMG-Line that I was going to replace, but it’s a 2yr waiting list!

Fallen for the new Astra Ultimate, but I can’t get a test drive for a couple of weeks (due to a waiting list). I’m pretty sure I will order it, from sitting in it & playing with all the toys, but what do real owners think of it? Is there enough Oomph from the engine? Is the build quality lasting? Any common faults? Etc…
I really appreciate any feedback
Many thanks