The one I got from Miguel are growing fairly well and have doubled in size in the last few months. However, Fragglereef's Bam Bams are different from others that have the dark ring and are solid orange other than that.
The frag I have that is nicer and has that dark ring came to me as a 2 polyp frag, then one of those polyps diappeared for some reason, and in the last week or so I've noticed a baby sprouting. So in 5 months that means I'm back to where I started... In that same time some 5 polpy frags of more exotic zoanthids have turned into 30+ polyp frags...