....light blue touch paper and stand well back....
1) The old English makes can be really good, but they're usually completely blunt and they can be badly worn. Re-grinding a drawknife is a horrible job to do.
2) Of the new English makes, my thoughts are:
a) Ray Iles - cheapest, nice handles, nicely ground
b) Crown - mid priced, poor handles (too small, shiney varnish), poorly ground
c) Robert Sorby - dearest, not too sure, not handled a brand new one.
3) There are also some French and German ones available. I don't know what they're like.
4) If you're really really rich, you could look at the Swedish and American ones. I haven't handled them either.
5) I have almost certainly forgotten some other makes - sorry!
I have a Ray Iles/Mike Abbot design drawknife which I'm very happy with, and an old Marples which I would be happy with if I could summon up the energy to regrind the thing.
Cheers