So why would a person who bought a 6800 want a 6700 instead? Am I missing something?

I just went into the shop to get two of my 6700 replaced (stupid d-pads are broken!) One has been replaced 3 time the other one this would be the first.

They told me it would be 3-4 days and it has been over a week and no call. I checked on sprint and notice that as of this week they are no longer selling the 6700?

I can't imagine them not having enough 6700. I thought back in March of this year they got gobs of them in stock and had lots of refurbished ones. Anyone know?