I have not seen a Burgess 127 but the laws of physics will not allow a typical
f/8 achromat to be without color. The best will have color. Don't get me
wrong, a 127mm f/8 would be a nice instrument in anyone's collection.

The D&G f/12 will have less color, period. And their reputation is for great
correction and smooth optics. If it were me, and I wanted a planetary scope
with excellent definition, the D&G would be the choice. If you want more
portability and don't care about more color, then an f/8 would be OK for just
about anything but the brightest objects.