well, ill say this, the XS sounds really really good, never for a second that I doubt the purchase. BUT the fit is a hit or miss, my coconut is on the HUGE side of the big. I maxed out the R70x wing suspension system they have(I have to bend the headband). So I thought oh so the XS has to fit me like a glove... NO, fit every loosely(could be good or bad)even for big ass head, pressure point under the ear-lope(after 2-3hr).

I haven't try the BTR7 yet, no demo unit sadge. But I wouldn't get it either, the bigger form factor doesn't fit my use case. cuz I clip my BTR5 to the "pen holder" slot of my shirt while the BTR7 doesn't have a clip/case.