and the one that really "sings" to me atm
THIS ONE! The reason I say that is because you said it's the one that really sings to you and it's the one that you feel is worthy of a drum roll. Anyone else's taste is beside the point if *you* love it.
Now that I said your taste doesn't need any bolstering, I'm going to bolster anyway... I agree with you that the stone could get lost against your skin in a solitaire setting. Something with either metal or white stones around it will make a big difference. Your drum roll setting accomplishes that on both counts.