Best leather for 41 / 41.5 Aqua Terra? (Preferably curved ends)

Hey everyone! I've been doing a lot of searching, but haven't found quite what I'm looking for.

I'm looking to pick up a leather strap for my AT... Has anyone found one with curved ends that fits nicely on the 41mm and 41.5mm Aqua Terra model with 20mm lugs?

I have a leather strap with curved ends for my Speedy 9300, so I've been spoiled by the flush fit... I really love that look now (pic attached at end)

What is your favorite leather strap for the AT, even if the ends aren't curved? I'm willing to consider other options! Price doesn't matter.

Thanks!

Anyone?

Not sure if it fits the AT properly, but the omega double ridge shark strap is the best thing in the world on a speedmaster. The hard part is actually finding one