Something to note, apart from brands, is that different camera systems give quite different results or colour 'looks'.
The last 120 camera I had was a Pentax 67 ll, and I was in the brief habit of using Velvia 50 with it until I discovered that the look was not a lot similar to the way it worked in 35mm on Nikon. I had imagined that 35mm film was made from different emulsions, but Kirk G informed me that he'd seen differently in a factory (or so my memory has convinced me) and that the films are the same, cut from huge sheets. So, one man's experience may not be the same as you will experience on your equipment - optics play a part too.
I still have some 35mm cassettes of E100S which gave very nice colour with people and scenics which is certainly not what I found with Velvia; I was also pleased to discover that E100S makes for very pleasant skin tones when scanned and converted to b/w; it is perhaps kinder than Kodachrome 64 was - maybe less crisp? - but it has also been changed to something else.
Among the ton of stuff sitting in the freezer awaiting salvation or the museum is a pack of Ektachrome 64 EPR 120; I don't even own a 120 camera at the moment, but who knows... when I get famous, no doubt. Rich would be even better.
Rob C