Tuning Which diameter Red Dot for Diana LP8?

[Alphonse]

I am trying to make a decision on a Red Dot for my LP8. I have my eye on Hawke Sport Optics Vantage and they come in 20, 25 or 30 mm tube diameters.

I am leaning toward the 25 mm. 

Recommendations on tube diameter to choose would be appreciated.

 

[Hawkeye51]

Alphonse

I don't have a LP8 but as a general rule, if I'm target shooting, any size will work but lighter is better for me. If I'm pesting, the larger field of view seems to help with target acquisition.