Of all the accessories that I have bought for my PC, the I-Trigue 5600s are both the best value for money, and the most aesthetically pleasing. From a visual perspective, the speakers blend in well with most environments, are small enough to be subtle (15cm x 5cm x 10cm), and deliver excellent sound quality. The subwoofer is also attractive, if not a little cumbersome; at 26cm x 22cm x 22cm, it isn't exactly small.
Sporting the much lauded 'titanium driver system', the 5600s deliver a full and rich sound. The bass is strong, but not overly so, and the distinctive satellites deal with high frequencies well. That said, one area the I-Trigue struggles with is mid-range sounds at high volumes, but unless you're planning on using the speakers at over 90% of their rated power output most of the time, this won't pose a problem.
One feature rarely championed enough is the auxiliary input attached to the wired remote. This is particularly useful for iPod/MP3 player owners, who can plug their devices into the speakers with ease. Complimenting this is a built-in 5.1 upmixer, that turns the stereo output from auxiliary output into full 5.1 surround sound.