The plant I've had for the longest is a rosette sword. It's really pretty, grows really slowly, and survived through my very low light period. I also love fanwort. The only place I've seen it is at Petsmart, and I've seen them call it two different things, neither of them "Fanwort". LOL. One time it was labeled as "Bush Plant". I had to ask on here what it was. I like it a lot. It floats, or you can anchor it to the bottom. It looks nice both ways. When you have enough light it actually grows roots and it grows super fast, too.
It's kind of a messy plant though because it's always dropping needles. Mine isn't doing great right now because I recently treated my fish with AQ salt and it made a lot of my sprigs of fanwort kind of explode. lol. I've got a few bare stems right now. So it's very sensitive to salt.