Rob,

i have never compared those two speakers, but i did do a comparison between the M3Ti and Image 2B

The M3Ti has far better treble than the 2B, but the 2B is more solid in lower bass. It has a bit more punch when played loudly. The M3's, though, were more detailed and neutral at all volumes except very high. The M3's at very high seemed to cringe a little, but I never listen that loud. I would pick the M3's over the PSB's, unless all I listened to was hard rock and heavy metal.