Yeah, I had already sort of grouped them into pairs in my mind already but for slightly different reasons:

BJ/Farenheit - pretty duff apart from a few stand out tracks
SWW/NJ - Great fun rock (young Jovi)
KTF/TD - Great mature rock (old Jovi)
Crush/Bounce - Crap pop-rock
HAND/LH - Trying to find their direction again but on the whole not great