I think the splitters failed because of quality. The wire used in the stem was very stiff, not really flexible at all. The trigger construction and action were terrible.
The new Trango flex cams are using the splitter gear 4cu design - 2 sets of cam lobes in direct opposition. They look and feel pretty damn good, but I haven't placed one yet. My main concern are the eensy-weensy springs that are a bit exposed to abuse in the smaller sizes.