Obivously want Madrid to win it, but tbh the alternative teams aren't bad in my book either.
It would be nice to see Roma winning it for the first time in their history, being the total underdogs, and as a redeption of that painful 1984 final they lost at home with that memorable penalty shootout where Grobbelaar made those quirky saves Dudek would imitate against Milan in 2005.
Liverpool is such a nice proper club with all that history and magical atmosphere their fans bring. They've struggled to perform domestically over the last 3 decades, but they are definitely a true CL club, and it would be nice to see Klopp win the trophy.
Bayern is probably the least exciting alternative, but they too are a proper club and a CL classic after all. It would also be nice to see Jupp win another treble after coming back from retirement; it would be pretty remarkable.