Hi, our names are Lee and Lisa and we've been collecting various cacti and succulents for several years now. We only have a small collection as we are running out of windowsill space (will have to move to a bigger house where we can have a greenhouse!) but it does seem to be predominantly Mammillarias!
As well as the cactis and succulents we have a small collection of carnivorous plants (mainly sarracenias - pitcher plants; definitely need that greenhouse!) and an allotment.
Lee & Lisa