For anyone interested, I purchased these Libraries and I am having lots of fun with them.
If Classic Vintage Analog Synths are of interest to you, these will greatly expand on the ability of your Montage/MODX.
If you buy both, you will receive a discount on the "Nostalgia" Library, because it may be viewed as an upgrade or expansion of the Xperience Library.
Each Library has its own set (many 100's) of Unique Performances (great Demo's of what the Montage/MODX is capable of), as well as lots of "Template" type performances to get you started on creating your own. In such cases, recommended Control Assigns are already built for you and behave like the "Knob Per Function" controls of old Analogue Synths.
The memory requirements for each are not crippling, due to the "novel" sampling methods employed by EasySounds (I recommend reading their Website).
The Samples are genuine samples of original instruments, both RAW oscillators, as well as "typical" oscillator configurations.
If you liked the free "KApro CS80" (a "must have" in my opinion), you will enjoy these.
Also Phat Analog 2 is bliss, and amazing, If you want just lush.