http://www.bananas.com/productdetail.as ... gsound-Pro
That's pretty weird. or maybe not. No mention of Korg at the USB website. Yah, that's weird.
Regarding M5 v1, it comes with what I would call, a good starter set. Limited in scope, but of good quality: a huge Bosendorfer piano, electric keyboards, drums, basses & guitars, 192kHz Percussions, a surround sound church organ, synths, a mini GM sound bank, the Charlie demo, and Plugsound free.
It definitely does not contain the equivalent of PSP. I who had nothing, found this collection useable. (K2 comes with 15 GBs of sound. Expansive like PSP). A PSP/M5 bundle would be really cool but that's not the case.
My preference is for samples vs synth emulations. PSP delivers. I'm gradually adding to M5. My two cents: PSP will more than meet your general music production needs without having to add specialty libraries. Of course the UVI sound cards can be played within PSP. (I just ordered RO and SA.)
Mach 5 is another issue. I don't have an Intel machine so v2 is a non-issue. M5 is really an elegant, powerful, but easy to use sampler. It's a pity.
If you're thinking about purchasing M5 v1...some reliable voices say v2 is coming. You could buy time by using PSP. Some, including myself have wondered what need for M5 with the power of PSP. Of course the answer is sample editting, importing libraries, etc.
K2 looks awesome and comes with the 15GB library. I tried the demo a few months ago. Really liked it. I took another look at it recently. For those with Intel machines, it seems like the obvious choice.
But if you're a MOTU supporter, PSP is the obvious safe choice.
The first sounds I checked out were pianos, bass guitars, and organs. Liked them all. The orchestral sounds are a subset of MSI, but still useful to have within one interface.
Latency with a buffer of 256 makes realtime MIDI guitar playing a blast.