In reply to connor:
if money no object, can I come climb with you
buy a reputable make, as expensive as you can afford, they are all good, the degrees of difference will not be noticeable (no offence) so they will all be good
the cheaper older styles were indeed poor, but then at the time they were the "cutting edge" of design, it's just that times have moved on
basically any ice screw of modern age, and expense, will do