Well, even though it passed one particular test very well, 
I still find that I can hear interpolation noise when using samples
which are sampled at a relatively low sample rate, such as 22kHz.
I knew it was too good to be true. I still think that it's very good
though. Definitely FAR better than at least one very well known
brand of hardware sampler, in my opinion. And yes, it's definitely
better than cubic interpolation.

The test I did was, really, the Gabriel Maldono(sp?) "transpose
a high frequency sine wave down" test. I transposed a 11025Hz
sine wave down by 11 semitones. (Gabriel transposed down further 
than this, though, I think).  Anyway, I listened to it, and also
did a spectrum analysis of it. I couldn't hear any obvious impurities,
and upon looking at the spectrum, I could see a few noise
frequencies up in the 17 to 20kHz range, but that's all. 
Definitely a lot better than cubic interpolation. (Nemesys claim
they're using some type of "multi phase" filtering for the interpolation).
Given that it did so well on this test, I was expecting to be able to
use samples with low sample  rates. I.e, I was hoping to be able
to use "critically sampled" samples. But it's not to be. 

Sorry to go on about a product that is probably "off topic" for
this list, I guess. I just wanted to clear up any possible misconceptions
that Gigasampler may have had 100% CD quality interpolation. 
It doesn't.

Greg.