Sanders Magtech versus Spectron Musician 3 Mk2

Hi, I am running Maggie 3.6's and Thiel CS5i's with a W4S ST1000 amp.  Thinking about an upgrade.

Two Questions:

1. Has anyway moved to the Magtech or the Musician and what is your impressions about the differences in sound compared to the ST1000?

2. Has anyone heard both the Magtech and the Musician and what can you say about how they sound alike or different?

Thanks,

Dsper