brill, thanks folks, lots of useful replies so quickly
We were planning on buying the Brother A50 soon, but once you add in the cost of the extra bits we need, the Janome works out better (more useful bits for less money) - on paper at least
Our local sewing machine shop has both in stock, so on our next visit we can dig a bit deeper and maybe actually make a purchase . . .
WRT 16 x 11" extension table it is listed as an included accessory (and on the link too) and our local supplier definitely includes it. Hard case too. The walking foot is £45 for Janome and £35 Brother, so not a deal breaker
Related question - just read the 360 manual and it doesn't seem to describe how to do twin needle sewing, I assume it can do that?