Name: Ginny G Central Iowa (Zone 5a) Plant Addict!!
I haven't tried either of these but do have Globemaster and Ambassador. Schubertii is a real show stopper too and Christophii (just added this year at the new house), but they are shorter. Awesome blooms though. I let the Schubertii just stay after it is done blooming until it becomes a tumbleweed They have so much interest and I'll bet your neighbors love them!