I understand that you probably don't want to buy the full Kontakt sampler right now, but I recently bit the bullet and it opened up a world of free and low-cost samples.
I was less impressed with the content that came with Kontakt than I thought I would be, but that was mainly because I had already invested in a several other sample libraries. The Kontakt content is good. (There are two Kontakt libraries. One is free with the free player and the other is free with the full player.)
To my original point, however, the big thing with Kontakt is all the other stuff out there that won't work with the free player (WaveLore, Bolder, Noise Firm, and 100s of others).