As a general rule, yes OBP is greater than SLG, but that is not always the case. Here is how I view the greater need in a lineup. 1. OBP- is the obvious choice here 2. OBP- these two are the table setters and need to get on-base 3. You need a balance here, I would say they are equally important here. 4. SLG- is going to win out here, ideally you have both, but if I had to choose its SLG. 5. SLG- same as 4, these should be your big power guys (Carlos Lee and ARAM would be a good example at 4 or 5) 6. OBP- you still want a guy with pop here, but OBP is more important 7. OBP- 7-8 are probably not going to be great hitters, but I would rather have someone get on-base to extend the inning. 8. OBP- want this guy to get OB so the pitcher bats and extend the inning 9. pitcher- just hope they do something! I just don't agree. I want OBP at every position. I don't want a guy hitting 4th or 5th with a .600 SLG and a .300 OBP. He's still going to kill innings. As I've said many times in this thread, I'm not saying ignore SLG, I think it's a hugely important stat. But if I'm deciding between a .380/.550 guy and a .300/.620 guy for the 4/5 spots (or anywhere else), I'll take the former. Give me OBP at every position and then put the better SLG at 3, 4, 5. I can't imagine SLG being equally important to OBP at the 3 spot. If you have two great table setters and then your #3 guy gets out more than 70% of the time, you're killing a lot of chances to score runs. #3 should be your best hitter, which is a combination of both. But OBP is still more important. EDIT: It's interesting that you pick CLee and ARam as your 4/5 examples. CLee has a .350 OBP this year and ARam's last 2 seasons were about .370 and .360 (it's down this year b/c of his terrible start). But that's the same kind of guy I'd want - good OBP and good SLG. I'm saying I don't want a guy like Soriano (career, not this year, where his OBP is good): .325/.500.