Hmm..how about a KBT Pure? That seems to ship with ISO layout?
Do you mean KBT Pure or KBT Pure Pro?
I have a KBT Pure (US ANSI layout) and find it very easy to use, although it takes time to get used to using the Fn layer for arrow keys and Home / End. I switch between US ANSI and Finnish/Swedish layout with Alt-Shift in Windows (default behaviour if you have more than one keyboard language installed). You can type fine in Finnnish (or Swedish) using the layout, but have to switch to US layout to get \|<> characters (and the '* is moved to under backspace). I don't really use those when typing normally in Finnish (although the shifted ' is irritating sometimes), only when writing code, so I do the same as henz.
The Pure Pro has dedicated arrow keys and separate 1x Del and Backspace on the top right, but it uses a 4.5x spacebar and is very hard to find replacement keycaps for, especially if you get the ISO version.
If you really like ISO layout and don't want to change the keycaps, the Pure or Pure Pro are both good boards. The dedicated arrow keys and separate 1x size Del and Backspace keys of the Pure Pro make it more like a 75% board. the Pure Pro is also programmable like the Poker II, which is a nice feature. Actually, the more I look at the layout of the Pure Pro, the more I like it. I think it would be quite easy to get used to the layout and doing coding / text editing would be quite intuitive (Home and End on the Fn layer of left and right arrows, PgUp and PgDn on up and down).
The Race II is another 75% you may want to take a look at, but AFAIK it also does not have an ISO version.
If you do want replace the keycaps, there aren't really any 75% boards that make it easy, even in ANSI layout, but in 60% size there are a few. The Poker II in particular since it uses completely standard ANSI and ISO layouts.
This will be your best bet if you really want ISO Nordic keycaps - buy a Poker 2 ISO and some Ducky Nordic caps.