I have the Strada 2's and the TR-1 sub, it is indeed a great combo; I have also owned the Ref 3.0's in the past, but cannot feasibly compare them (different rooms, different systems).
I have my Strada's on the floor stands. Initially (on my wood floor) the sub didn't integrate well, so I had it turned down too much and had a bit of an upper bass suckout that....sucked. Since put the sub on a slab of granite, about 6-7" high, and now works much better, I have owned and love Gallo's for their CDT (tweeter) for many a year now, dating back to the polymer sphere References.
All that said, I have more of a gut feel that the Strada's may not do as well on the desktop. Can't even say why, just not sure about them SO nearfield. But I never tried them there, so take it for what it is, just a gut feel.