as i have said b4 one of my sigmas is over 20yrs old and still going strong, no need to keep 'updating' it as it dose all i need it to do, cut hard pocs, cermics, glass, ect no probs.
from what i seem to here about the rubis is you tend to have to keep 'updating' them to keep up with the changeing tile trends, and who has a 20yr old rubi that hasn't fell to bits, that can cut large format rock hard porcs?...........hang on i might find one in a skip somewhere..:lol::lol: