My top level is all GG and Ross. You will not go wrong with Ross.
Even when I build a small 3 rail layout I still use 072 switches. The smaller switches can have problems with some equipment. Just because your train can handle a smaller diameter curve does not necessarily mean the train can handle that same size switch.
Consider using a minimum 072 switch so as to make future purchases less problematic.
Bob, did you have a typo above in your GG switch comment?