I hold WFE and have looked at CLA. And IMO I think WFE has has a lot more upside then CLA, but also more risk as it is only just starting out and hasn't drilled at all yet. WFE also has the possibility of Jason Brewer bringing in some other large acquisition like he did with VEC and 4CE,(he has hinted at it on Twitter) so there is a large hope that WFE will have a big announcement in the coming weeks and a move in SP, but it is all "If's". If you want to get a feel for what is going on in WFE, go and read the Next Acquisition thread in WFE. Hope they both go well for you.