Both my Janome and Pfaff do these 'perfectly' (allowing for operator error, lol), but I actually prefer buttonhole to zig-zag. I changed to buttonhole after I completed my avatar quilt - I feel it's neater.
The Pfaff has the advantage of the built-in IDT walking foot. (I am now so used to the IDT I bought the Passport to take to class, having had a really sticky start with the QE4).