My vote is for the Hamstead (I'm biased since I have the MM). But, I do like the fact that the Saleya has a zippered top. But, I would think that the Saleya rolled handles would be uncomfortable on the shoulder and they are not adjustable like the Hampstead MM (which I really like!)
I tried both on today at the boutique and I just thought the hamstead had something extra about it! That was the PM, didnt see the MM, so might feel different about that. The saleya is TDF also, oh im no help! lol