I gave up roaches about 10 years ago and only recently got back into them. I love seeing all the new species that have been introduced since then. I've been buying small starter colonies of the collector species but, I try try getting colonies of at least 50 - 100 of the feeder species such as B.dubia, B.latteralis, and P.nivea. It's more fun to watch a collector species grow from a few individuals to an out of control colony. Instant roach colonies aren't much fun.