I have both..Maggie 1.6s paired with Musical Fidelity Superchargers and Martin Logan Spires with an ARC VSI60.
The MLs, with 10 in active woofers and a sensitivity of 91 db are quite easy to drive and the VSI60, with some 50 wpc of tube power, is capable of taking them to very high sound levels. Also, I find that they load the room in a somewhat different manner, with a throbbing vitality that makes rock come alive. That said, I find the bass somewhat boomy for my tastes, but that could be a function of the tube amp, or the room, which is completely untreated. They throw a very decent soundstage, but do not image with the best.
The Maggie 1.6s, with a sensitivity of 86 db are much harder to drive and dont reach very high SPLs. They absolutely crave power and I have driven them with various SS amps of decent pedigree, from lower powered high current Arcams to Brystons putting out in excess of 400 watts@8 ohms, and many more in between. While they sounded nice with many of these amps, in my experience the MF Superchargers are the ones that really make them sing. Great soundstage, more than adequate taut bass and they really excel at vocals and strings. Voices and guitars can sound really spooky.
Since they are at 2 different locations I cannot interchange the amps to see how one set of speakers sounds with the other amp, but I do feel there is something magical about the Maggies and would prefer them over the Spires even though the Spires are almost 5 times pricier.
Trust this helps.