30mm tube is a little more light, apples to apples. Meaning same glass and coatings. Some 1" scopes are brighter than lessor quality 30mm tubes. I have 1", 30mm and 34mm tubes and except for the last 10 minutes of legal shooting time (20 minutes after sunset) I can't say it matters. BUT a wider FOV is beneficial in some cases. I was a big fan of the Redfield Widefields before I got 30mm tubes. On my Elk rifle, I have a 1" tube and when I upgrade it, I am going to a 1" tube. On my predator and match rifles, I really like a 30mm or 34mm tube.
Personally, between those 2, I'd get the Leupold.