Montolit for me, my 75 has been a great cutter, cuts everything i throw at it.
My father and i were Rubi Mad, but when i bought a TS 60+ for porcelain i found the arms flexed and it just didn't the tiles neatly.
Dave at trade tiler suggested the Monty and it had been fab.
Certainly by a Montolit again, or look at a Sigma, as they are becoming so popular, some thing must be good about them as so many die hard Rubi guys are switching to them.
No point being loyal to a brand if another brands products are doing the job better.
But i will be breaking out the TS40 for a commercial job coming. They still take some beating on smaller ceramics.