Hi Jimy, Slow speed records is real way to imprese public. I would like to say that analog speed records are very difficulct, but digital as well. There are thema in German forum which call wie Langsam ist Langsam. I think you shoul look it and maybe post there your own record. There are a lot of impressive videos with calculation. Those who can beat longer time for few mm are winners. Also you could see analog record of of Hrvoje Trains here in YT. There is a fantastic performance. I would like to say that there was not made any controller for slow performance. Every Brirish or German best controllers have their problems. The ideal controller should have logarithmic potentiometer, whith a huge knob. And a possibility tho change type of DC. Impulse, halfwave, 3 stage PWM and so on. There should be a mixture of Teichmann, Heiswolf, Gaugemaster, Duette, Titan and Siemens-Arnold controllers with some ideas of industry controlles as well. I could tell that there is no new 3 stage PWM for model train exist yet.