If the Jacksons fit well, what about an Artiste or Classique model? They're PVC-bottomed, but the boot itself is pretty good.
I'm in 5 year old Classiques now with Mirage blades. I don't want to seem like a spoiled teenager, but the new ones have that stupid gold Jackson stamp on them. I am NOT wearing that. And I like the Jackson Finesse, but they're probably too stiff, and have a Gold 'Finesse' stamped on them. Gag. Yes, I'm shallow. All that flash would be okay on a beginner, or someone younger, but it repels me. (You can now all shake your heads at me in disbelief)
And I did consider the coach boots. They look nice.
(Also, about your story of the stock/custom boots. There's times I think Harlick just sent me stock boots, they don't fit at all well. Custom boots and I still have to wear heel sleeves)
I'd look into other maker's custom boots.. either Klingbeil or SP-Teri can definitely make you what you want, but you'd need to work with a good fitter. Getting things like a scallop (or two!) or an extra flex notches could help with your knee bend, and they'll definitely be able to make them to the stiffness (or lack of) you request.
Ooooh, how much can I ask for? Extra flex notches, scallops. That sounds exciting.