I've got both, I much prefer the R10 for the looks and the fact that (for me) it's much more pointable, therefore more enjoyable and easier to shoot accurately.
As for quality, it took four Weihrauch's to get one that didn't have a problem, the bluing still isn't great though.
The R10 did have an intermittent problem and rather than mess about with sending back to BSA, I took it to RancidTom to sort out, it made a world of difference.
Cheers,
Mark.