When TittyMagic first came out, I remember it feeling under-baked and no better than BreatAutoGravity + soft body physics.
Holy shit is that no longer true: this plug-in is easily one of VaM's most indispensable now, and really has been since I suppose the 2.0 update? Whatever the case, it's been freely available long enough that I don't mind dropping a few dollars for Early Access to the new one as a thank you, for the best breast physics available on the platform.