Early next year I'm going to be looking for a 2 gene male, since a calico bumble bee is out of my price range. I love the look of lesser bees, BUT I will be getting a male lesser in a few weeks. I don't have calico or spider in my collection, but I'm honestly not a big fan of most caliders, especially when compared to lesser bees (or any morph with lesser in it).
So it comes down to having two males that have lesser in them, or having a lesser and another male that gives me two genes I don't have. Since I'm starting out, I think the latter is a better idea in regards to building a collection...but lesser bees are so pretty and I'm not going to get my hands on a female one for a while.