If you have the space and budget - I would definitely go with the cooktop and wall oven.
I love not having to broil myself while using the cooktop - plus I don't have to crawl on my knees to get into the oven!

I have the slide-in Electrolux induction range. I use the second oven to hold muffin tins. Because my kitchen is small, my second oven is a Breville toaster oven on a butcher block stand. There's no place for a wall oven!

There are lots of threads about the wall oven vs. range debate. I'll link one below. It's really a matter of personal preference and how your kitchen space works.

I chose a double wall oven because I prefer to be able to look in the oven at eye level. Even my lower oven is higher than a range oven. Like a2, I find it more comfortable to cook without the hot oven right there in front of me. Also, I like having a utensil drawer right under the cooktop, as well as the pot and pan drawers below.

On the plus side for a range, the oven is under the hood, so you get better ventilation.

There's also the question of double oven vs two singles (if there's a problem with the controls, both ovens go out if it's a double, but one will still work if two singles.) Also to consider is range/wall oven plus steam oven or range/wall oven plus speed oven.

Here is a link that might be useful: wall oven vs. range

calling that lower drawer on the Elux an 'oven' is like calling a shoebox with a hairdryer an 'oven'. Don't buy the unit for this second so-called 'oven'. Get it because you want a slide-in, induction top and good single oven.

The debates about wall ovens under a counter go on and on. I personally don't care for it since it puts the oven so low to the floor. But I have back issues.