sometimes the registry points don't reflect the better, rarer or higher value coin

I'll keep this short as I know the excitement over the arrival of the ASE's sets and subsequent grading results has been the big focus of interest for the past month. After a self-imposed buying moratorium for the past 6+ weeks I had won 3 items at the Stacks/Bowers auction in Nov here in Maryland ( Baltimore).

I finally upgraded my 1941 Walker to an MS67 - the MS66 that filled the slot is not going anywhere though, sorry. I also won a coin that puts me in an interesting spot.

I won a gorgeously colored 1944 MS68 Mercury dime. My mercury set is an MS67 set until now and the slot has an MS67FB coin in it. My newest addition does not have FB's but is an MS68 which is actually much rarer than even the scarce MS67FB. The registry ( just in my personal opinion) has not given the proper consideration for the higher grade MS68's in the Mercury series. For almost every date-especially within the short set- the MS68's have lower pops than their MS67FB counterparts ( the 44-S date is no exception.)

Well the point difference is negligible although the 68 cost roughly 2x that of the 67FB ( but this is also probably largely in part because of the fierce bidding for this coin because of its eye-appeal).

So after waiting and ruminating for about 2 weeks I've decided to go with the uniquely toned and appearing MS68 over my better struck and satiny MS67FB which to many would be "just another blast white gem".

I'll leave my 67FB in the set for comparison purposes but I'd be interested in what others might have chosen in this situation. Higher points and better struck or distinctive eye appeal with higher grade but lower points?