well the Eurovax Max V 2008 is for cable and the Eurovox TX (MMDS) is for when you have an receiver aerial on your roof.they have different tuners,thats the only real difference between them, you would want to go with the Eurovax Max V 2008. just make sure there is digital cable in your area.
what area are you, if you just have analogue in your area you will not be able to pick up the digital stations. in digital areas the digital and analogue come over the same cable.