Hi Aviel!
I think the sentence that matches the best with yours and sounds natural is the following:
"Aparte de "Masterchef España", no creo que haya otro programa que realmente me guste".
You can change "Aparte de" for "Excepto" if you want.
Another simpler sentences would be:
"(Creo que) No me gusta (ningún) otro programa excepto Mastercheff"
You can also change "excepto" for "que no sea" in this case.
Have a great day!
Btw. I hope we can have a talk some day on Skype. ^_^