Wayne,
Ditto what others have said.
I will add that I print Velvia, Provia, Agfachrome, Kodachrome, Kodak E100, E100S, E100VS, E100G...you get the picture.
To me, they all "print" the same.
I get around contrast masking by doing very detailed burning/dodging. What-ever is in the slide, regardless of it's contrast, can be brought out with today's ciba.
Of course it helps to start with a broad range of values, but in practice I find no difference in printing difficulty between those films I use.
Provia is nearly as contrasty as Velvia, but not as saturated. Today's ciba will still punch the hot colors, but also maintains beautiful whites and blacks.
In general I shoot Velvia when I want maximum heat from ciba, and the others films for the more natural and neutral colors.
Good luck, and get going!
DT