Nope, don't have that one. I suspect I will eventually, but am not actively persuing any cacti.
Because of my limited space, I now collect cacti as they come or are convenient. I usually pick up one or two each month at the cactus club meetings. Thanks to GeneS, I am usually able to pick up healthy, uncommon, properly identified plants at the raffle table.
This keeps me at a slower pace that allows for my lack of room for more. Also saves money!
All Cacti are succulents, but not all succulents are Cacti