Ok...
The drivers in the Electra’s are NOT even close to the ones used in the Sopra or Utopia. The Electra share NONE of the same parts except for maybe the beryllium diaphragm and some nuts and bolts. The voice coils are different. The baskets are different. The cones are different. The surrounds are different. The spiders are different. Focal optimizes every driver for every application. The 6.5" mid-range in the Sopra has nothing in common with the 6.5" mid-range in the Electra. They don’t even use the same mid-range in the Sopra 2 and 3 The Be tweeters in the Electra, Sopra, Kanta, and Utopia aren’t the same parts and they’re not interchangeable. The mid-range and woofers in the Electra are more like the bare-bones W cones they were dopping in the 800W series. No NIC. No Power Flower magnets. No TMD. THEY AREN’T THE SAME DRIVERS. Just like the drivers in the Kanta aren’t the same drivers as my 936’s. You give way too much credit to the cone material. Go read Focal’s white paper on the F cone. It right there in black and white that the F cone has some clear advantages over the W cone, and some disadvantages. Which is better depends on how it’s built.
I honestly don’t care what speaker you buy. I know a guy with 1038’s and he loves them. I wouldn’t turn down a pair! I like the W cone sound. All that said, the Electra Be tweeter is the oldest and brightest Be tweeter they make. Very similar W cones in the 836W aren’t as warm and detailed as the F cones in the 936. The better Electra cabs will make them sound better though.
I apologise for trying to provide information. I didn’t realize that it would be so upsetting.