I have never tried the 57TW, but keep in mind the coil-splittable EMG's always sound a bit different than their humbucker only versions.
The 89 is leaner and brighter than the 85. I honestly kinda prefer it.
The 81TW is fatter and lower output than the 81.
I don't know what the deal is with the 57TW, but do keep in mind that the regular 57 is just slightly hotter than the 85, but more noticeably hotter than the 81.