I looked at both when I was buying mine. The Monogram 30 was way too big for me especially because I don't carry a lot of stuff with me. I looked at Monogram 25, too and after putting all my stuff in it, it was sagging! I love the shape of the bag...I think it's classic and timeless but didn't like the saggy look. So, I went ahead and bought a 25 in Epi leather. It holds its shape very well and it looks fantastic!!!!
So, I would go with a 25 unless you need a big bag to carry lots of stuff!
So, I would go with a 25 unless you need a big bag to carry lots of stuff!