Okay a couple more before I call it a night.
Clkwrk,
#1 (Favia retake) I still believe that this is Favia rosaria. They have reasonably large and sharped edged corallites.
#2 I am still thinking along the lines of a Echinophyllia echinoporoides. The corallites are smaller than an E. aspera and not quite so defined.
#3 Looks to have very small corallites and seems to be more toothy. I am actually thinking a Oxypora lacera with this one.
#4 I agree it is a A. granulosa
#5 A. vermiculata, I have seen a few come through lately (you might see one on my site on Wednesday). They have very scaly corallites which are very uniform. We sometimes see these come in as blue and are Bali Cultured. These are newer and given enough light can turn an unbelievable yellow (The brightest I have ever seen!).
#6 It faintly resmebles a A. loripes with the bare branches (with no corallites growing on one side). But I can't really make it out as it is somewhat blurry. Sorry to hear that you lost it, hopefully your frag will become a colony over time.
#7 The one that was sold to you as a Echino is a Echino but not the kind of Echino you were thinking if you were thinking an Echino...

It is an Echinopora gemmacea, I have one in my display tank that is exactly the same as this just larger. I love it, in direct lighting it is bright pink and red, shaded it is a brilliant green.
Thanks for the challenges Clkwrk, I would love some more if you have any.
Chris @ RM
I almost forgot the next two.
The one with the brown polyps and Purple tips looks to me like a A. desalwii but with the polyps out so far I cannot see the corallites. I you can take another photo with the corallites retracted I might be able to give you a better guess.
Now the last one you are asking about it looks to me like a A. vaughani. They are almost always blue and have corallites that are widely spaced. But I am not completely sure on this one. Would there be any chance for a closeup of the corallites?