Bulgari Soir does last longer than Bulgari pour Homme, but that's not difficult. It's a very 'round' fragrance, not edgy. It's warm and smells luxurious. I don't find it particulary provoking or exciting though. I don't know, I don't love it to bits (like Bulgari PH except for the very poor longetivity) but I do own it after sampling it, so there must have been something.
Can't comment on CK Euphoria, as I haven't tried this one yet.