Kodiak, I urge you to get a pair of M2 bookshelves and try them against your M60s. Unless you are sitting 20 feet back from your M60s, I expect the M2v4 will image and soundstage better than the M60ti. Just use some boxes for stands.

You won't get the bass from the M2s you get from the M60s though. But you may like it better. And they certainly won't go as loud as the M60s before distorting. But they may go loud enough.

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated