1 - BSB
2 - Chatmonchy
3 - Matsutoya Yumi
4 - Morning Musume
It is worth mentioning that the 3rd album sold less than 5,000 copies. This doesn't talk good about what MM might have sold on their second day.
Since I sense a new wave of negativeness coming from comments like this, may I remind all that most people already have all the material that is on this album?
No negativeness intended. Just balancing your comment mentioning Yumi sells millions, because this positiveness could induce people to think the drop ain't bad at all, and lead any other person to a bigger disappointment later.
Would have it sold worse or better if the current lineup had re-done the singles? That's something I don't know. But I think you couldn't call it a Best, then. I can share what I think, though. I prefer ALL SINGLES COMPLETE to have all songs with its original generation of singers. To listen to the updated versions, you have concerts. I wouldn't be too excited for a self-cover album.
^Even Ishiguro Aya, Fukuda Asuka, and Nono are on the booklet... Which I find odd. O.o o.O
I find it coherent. It'd have been a mess not to have the original girls say something on a 10th Ann collection, unless of course they would have rejected to do it. But I'm glad they did ask them, and that they did accept.