My wife bought me a pair of Strolz boots for a present. They are expensive so that’s the way to get them. They fit like gloves and I can ski all day without noticing it.
You’ll need to book two appointments, one for the measuring which is a very thorough process. Then go back the following day for the fitting. This process includes the "foaming out’ of the boot lining. They pad the "wear points" on your foot with little adhesive pads like corn-plasters. The result is that there really isn’t enough space for your feet in the boot and as the foam sets it does feel that your feet are being clamped in a vice. Whatever, both the pain and the money are worth it, they do achieve a perfect fit. So if you’ve got the money or can persuade someone else I’d recommend them, I’m sure they’ll be a lifetime investment.