I find TMX and TMY in T-Max developer to have higher speed yet increased contrast as compared to TMax-RS and Xtol. my problems with Xtol, are consistency. I buy the 5 litre packages that seem to work much better than the smaller samples. TMax grain in Xtol is virtually non-existant and greatly improved over other developers. Xtol processing yields a tonality that seems to scan better as well. unfortunately, I have lost many images due to inconsistent processing in Xtol even though I have standardized on water and timing.(posted 8710 days ago)my best results are in 6x6cm format. there is such a difference between 6x6 and 35mm in TMY, such that I cannot believe they are the same emulsion.