Since you brought up numbers, here are the ones I worked out going by the Business Cycles prices (and, yes - 1" threaded):

Al bar + Al stem:
$152
660g

Cr-Mo bar + Cr-Mo stem:
$196
1135g

Al bar + Cr-Mo stem:
$230
770g

Cr-Mo bar + Al stem:
$118
1025g

I've been trying to figure out a nice "compromise" between performance and cost ... while still being a slave to my sense of aesthetics. I hit the wall when I realized I didn't know which would have more effect on steering stiffness (stem or handlebars).

- eyefloater