they should ALL be easy-growing, and probably will not mind wet feet, although in these crosses a few of the plants will prefer the drier conditions of the species parent.
wossner supergrande should be the darkest of the three given the warscewiczianum parent. giganteum probably should have the longest petals since it is 3/4 caudatum. mont fallu has the most longifolium in it and will probably, on average, be the most forgiving culture-wise. but all three should be easy to grow.