Purchased an Enve Melee after a high speed crash destroyed my S-Works Tarmac. Sz 52, 40cm bars, 100mm stem, built up with SRAM Red AXS with a Quarq power meter. Rolling on Carolina 50mm wheels, Industry 9 hubs and GP 5000 TL 28mm tires. I currently have approximately 400 miles on it both trainer and outside. If I compare it to my Tarmac the geometry is almost exactly the same, matter of fact, the only difference is a 4mm longer top tube and about 150gms heavier.
This thing is stiff...but in the right places. I think that is mostly a function of my going from QR skewers to thru axles. Fully built it's about 1.5lbs heavier than my Tarmac but I went from rim brake 11 speed to disc brake 12 speed and I think that is the main reason. It doesn't feel like it has the same snappiness as my Tarmac did when climbing but all out sprinting and cornering at speed I don't notice a difference.
My only complaint if I had one is that it is only available in one color. I typically build my own bikes because I don't want anyone to have the same bike I do and with only a single paint color that significantly increases the odds I will see another that is at least similar.
Long story short, I don't have any regrets and I am happy with my purchase, would definitely buy it again and recommend the Melee to the serious cyclist!!