I am glad you looked into this a little more closely. The UFO202 that I linked to doesn't have optical output the other two do. The red color of the UCA222 is the same color as the Behringer products that I have around, and the 4348 feedbacks indicates to me that it is likely an older model. They all are likely to perform similarly. Since the UCA222 is currently just $9.99 with free shipping I would try it out and see if it works well enough for your purposes. Chances are they are closing these out and once they are gone there will be no more of them.
I checked my Amazon order history; I knew I had one of the little Behringer Audio Interfaces around. I have one of the UFO202s that I used for digitizing LPs to one of my old laptops. Unlike some of my other Behringer gizmos it actually is gray. I bought it in 2011. It did a good job. I went ahead and purchased UCA222 this morning to get the optical output, if you would like I will let you know how the two compare.