Alexander, Sebastian or Henry?

[Babybell7]

My DH and I really can't decide which one we like the best, our favourites change daily. So opinions would be appreciated. Please keep them helpful though, rather than just "I hate them" as we will be choosing one of these names.
How do you picture children/men with these names? Do they sound strong, smart?

Alexander
Sebastian
Henry

Middle name will be Ridley or possibly Rupert Ridley if it sounds better with two middle names. Surname is one syllable.

Thank you.

Sebastian is by far the most interesting. They're all good names for different reasons but at the end of the day there are heaps of Henrys and Alexanders out there and both are good but ultimately not madly interesting choices.

I don't think you'll regret any of them as there is nothing negative there, but if all things are equal then go for Sebastian!

I've got an Alexander and a Sebastian- great choices

Not keen on Seb as a nickname- ours is a Bass. Will live with Seb if that's what he prefers though. Loved the number of nns for Alexander - he's a Sasha for now but there are lots of options for a name to suit him as he grows.