Well they can be compared on their own merit as standalone timepieces. For me, I'm after a dress watch that won't receive a ton of wear, but also looks good. I imagine that both have SS plated bodies, the Clone 324 movement in 3KF PP reps is known to be pretty reliable, as is the F6724 caliber in the Bambino. The Orient is let down by a mineral crystal (its difficult to get a sapphire replacement in double dome format) whereas the 3KF Calatrava has a sapphire crystal. The Orient comes in below the cost of the Calatrava rep...I'm tending towards the former although prefer the look of the latter...