Haven't read all of thread, but my advice would be that kitchen trends come and go, so don't spend loads. Even "classic" styles date, if you think about what was "classic" in the 90's in a period property, its different to what is now, and looks dated.
Dovetail joints, ergonomic design and state of the art runners etc are all very nice, but unless you have money to burn, are unnecessary.
My SIL spent a fortune on her artisan handmade kitchen. Its unlikely she will ever update it. She doesn't care if something is dreadfully out of fashion, though. I am far shallower, sadly.
We had our kitchen ( well the whole house ) done last year, and spent around £5k. The kitchen is very contemporary, mainly Ikea carcasses, some Ikea doors, some elm doors made by local joiner ( we had the wood from the house ), worktop by local stonemason, appliances by Sainsbo's. I didn't want to spend a lot of money, as I want to be able to update it in 10-15 years time, without thinking about all the thousands I spent on it. So if its your forever house, remember this!