A very good choice are the X Amarine Hybrids of the so called Belladiva series. They come in different colors, are vigorous and free flowering in my climate. I don't know how hardy they are. Nerine bowdenii does not flower in my Mediterranean climate but is still there. I used to have magnificent increasing clumps of it in my former garden in Germany. It might need colder winters than I can offer. I can grow Nerine sarniensis and its hybrids in the open garden. They start to flower now but are much slower to increase than N. bowdenii or the Belladiva Hybrids.