Keeper, I would suggest an EO4 over the WE 9V only for reasons of runtime and safety. The EO4 is an improvement over the HO4 and noticeable, but it would be up to you if enough for another purchase. The WE 9 is a wider beam so it may be better for your purposes.
Thanks Glen, probably won't worry then, as either would mean more purchases when really it isn't necessary at this stage (too much else to buy). Just was wondering as i often read of Surefire rechargeable options being a P90 LA and RCR123's and since i had the LA sitting around thought it might be an option. I will await for you to acquire stock of the new Cree drop ins