I think you might like the Gallo... My setup is a little different from what you are considering in that I have the Due' for FR, FL, and Center with Micros for the surrounds. Likewise my familarity with the Gallo sound relates more to the Due' than the Micro. But in general the sound is similiar. The Due' has a little better HF extension than the Micro, is more dynamic, and all around a better speaker; but it should be, considering it's cost. I was planning to get the same exact setup as you are considering but I found a real good deal on the Due', so I decided to put them up front. I'm sure you will be very happy with the Micros. If you go with the Gallo, are you considering the MPS-150 sub as well? It is a good little sub AND if you need a little sub it will work well with the Micros...but so too would any number of subs...some maybe even better.
If you need small speakers of the "lifestyle" variety then I think they are hard to beat.
If you need small speakers of the "lifestyle" variety then I think they are hard to beat.