I have the PSB Image 5Ts. Not sure what you mean by "prefer on both speakers". I have not heard the M60, so I'm just speculating that it is possibly more detailed. But I really like my speakers. They have great dynamics, very good detail and clarity, and produce a well anchored image while reaching deep enough to render the sub a bonus for HT only. I would say the M60s offer a much better visual package as PSB does not spend much time on the cabinets. When I bought my towers, PSB did not have as many lines as they do now, so I think you can get the visual aspect in the Imagine and Sychrony lines, but those prices are much higher than the 60s.

Panny 3000 PJ, 118" Carada, Denon 3300, PS3, Axiom QS8, PSB 5T, B&W sub, levitating speaker wire