I love my crinium! It's one of mine that has survived moving when I had to take down my tank.... I cut a plastic cup in half, smoothed the edges, then scooped up the bulb in it's substrate, and transferred the whole thing to the "temporary" (ended up being much longer than planned, and is still in there) and it's survived beautifully, and grown such long curly leaves, with absolutely no help from me! I decided on the cup scoop method to move it so I wouldn't disturb the roots too much, and plant didn't seem to worry at all.
I was new to the hobby when I got a tiger lily, and it was amazing while it lasted. When that first shoot of a waterlily pad decides to head for the surface, it grows so fast, I was amazed! Once it stopped doing so well, I took it out of the tank and stuck it in damp sand in a cupboard to replant once the bulb had "rested" - something I read about somewhere. Of course I forgot all about it until after the bulb had died. But I'd give it a go again sometime for sure.
I think that there's more technique involved with the tiger lily plants - something about trimming the shoots that head for the surface if you want it to keep producing more underwater leaves, I believe, but don't trust me on that, do more research elsewhere, because it was a few years ago now that I had and eventually lost the tiger lily plant, and that's when I read up more about it, so I may be wrong or confused. Would certainly not be the first time!
Both beautiful plants though. Well worth it.