Searching for controllers and I have found something I'm thinking about there is a digitrax zephyr DCS 50 and the dcs51. I see the dcs51 I can change programming the CV variables in the locomotives changing the speeds the breaking the sound volume and a few other things. Will the DCS 50 do this? Or just a dcs51. Now I know I can get even higher in that will do it all but I'm not looking to spend $300 LOL. And is 125 too much to spend on a dcs51?