A late comer to the TT EZKeys stuff, So far I only have the Grand Piano, and there are others I would like to get, I notice you can just purchase as an 'expansion' as apposed to the full thing as long as you already have one full product. Am I right in assuming that the only difference between the 'Full' and the 'Expansion' is that the actual 'Engine' or whatever is missing in the expansions ? everything else is the same, if there is midi in the full it is also in the expansion etc ?
 
Hope I explained that good enough . . . thanks.

Yes -that's been my experience with the midi packs

Ok, thank you, I just purchased the Electric Grand the Mellatoon and the Vintage Upright expansions, when downloading I also discovered sitting in my Toontrack\EZKeys Download folder the Classic Electrics, Retro Electrics and the Small Upright . . . I forgot I had these lol, I got them in a swap along with some EZDrummer stuff and forgot all about the EZKeys stuff. . . BONUS !!!

EZ Keys is a fantastic little program for all us non-keyboardists and many of their midi packs are excellent. 

I've been adding EZKEYS expansions with each Black Friday. I got the Retro Keys this year. I have all but 5 of the midi packs. It is a very useful program for sure.

I have all EZKeys modules except the Vintage upright.
 
I do have all the MIDI Packs.
 
I adore this product line (mostly the MIDI but the keys a tres cool too).

Just got the Vintage Upright from BestService.de (via a generic sound expansion) for just under $55 by purchasing in £.
 
http://www.bestservice.de/ezkeys_sound_expansion.html (since VAT is excluded for a US purchase).
 
Whoop, now I own all the sound module and all the MIDI.
 
I'm set.
 
To do what, I do not know.

I am hoping to get the Vintage upright. I really like the sound. I got the small upright over BF/CM. It might just be my piano sound. I like to play my Fishman TriplePlay through EZ Keys and watch the cord ID thingy. I did not know I knew all those different chords.

Small upright was used in this song.

They have to come out with a Hammond pretty soon I would think. They did a Melotron and a pipe organ before the Hammond.