Laminated Okna 800 Double Hung came in at $500 each. The Kolbe Forgent with offset glass are $475 each. The Sunrise NRG are over $600. All approximately the same energy performance.
I plan on going for the Okna 800 laminated for the bedroom windows, then likely Okna 600/800 triple pane for others. It seems like excellent value and a solid product.
I'll try to remember to come back and post about the results in a few months or whenever the windows are able to get here and installed.
Thank you all for your help!