I've never heard the M3Ti, but I have heard the M60's. I own classic 170's. Other than the bass I did not feel that my 170's lacked anything compared to them. I have chased my kids from the room playing the 170's at higher than normal SPL's, crossed over to a sub at 80hz! The SE versions are supposed to have even lower distortion and could play even louder if that is what you want. I have plenty of volume for music and movies in my 13'x 18'x 8' room hooked up to a Outlaw 1050 putting out 6 channels @ 65watts each.
I do have Axiom QS-8's for surround duty and love'em! They seem to blend very well with the 170's. I would not have these if I had not been fortunate enough to win them when Axiom put on a contest to name their new inwall/onwall speakers....."Architectural Series"
Ed
* Sierra-2EX's W/V2 crossover upgrade
* (2) Rythmik F12's
* Parasound Halo P6
* Audio by Van Alstine DVA-M225 Monoblock Amps
* MiniDSP 2x4HD For Sub calibration
*World's Best Cables Canare 4S11 speaker cables