If you are interested primarily in playing realistic sounding instruments (wind, brass, and strings) using a keyboard, or a wind controller you should check out:
Look here for specific virtual instruments, pricing and most important of all, the audio demos for each instrument:
http://samplemodeling.com/en/products.phpAlso look for other demo's in the forum here:
http://samplemodeling.com/forum/viewforum.php?f=3Finally, you can check out my stuff too, with the link shown below.