Thanks for the reply. I have been setting up SR:LE, and managed to get as far as "Conflict Resolution" section and suddenly got scared. The keys things I want are challenge and immersion and both paths seem to provide that.
I think I will take a punt at setting up the Conflict Resolution esp, and if (or probably when) I fail dismally, I will revert to Step core. I have already gone to the effort of optimising my textures for my lowly 1.5GB graphics card after all!
PS. thanks for the heads up on OBIS, looks interesting, I think I will give that a spin as well.