Better for what.
I would say it is going to depend a lot on what your sources are going to be and what your future upgrades are likely to be.
The Arcam is the only one with a phono stage for example.
Cannot really answer poll until we have more information.
I would say it's a worthy contender for the CXA81, especially if you want a smoother sound. The Arcam will give away nothing in soundstage though. It should really sing with a B&W 606 or equivalent Focal 906.