As I already have First Call, Mojo and all the Kontakt and Sampletank, Garritan as well as most of the "samplemodeling" ones and others. What are those "better libraries"?
PS: I should point out that I'd get this strictly for the ease of adding articulations (i.e. doit, fall off, rips, etc...) and that I'm mostly interested in POP and R&B usage as I already have my orchestral needs more than covered.