Royal Oak 37mm Blue vs Grey

[MAT4150]

Have the opportunity to pick up a blue or grey 37mm RO and wondering for long-term wearers how do the colors compare? I slightly lean towards the grey because I see so few grey dial watches and just seems more unique but know the blue is a classic. Does the grey wind up blending in too much with the rest of the watch or is it fairly readable out? Have seen the 37 grey in person but only a 41 in blue. But would appreciate folks' thoughts!