Don't be afraid to push the B-T-N PPs as the main press....thats actually where I am leaning, and then using incline d-bells if I want to train my tits. Benching is fun and all, and I am not in the 'anti-bench' camp, but I don't think it is the be all and end all of upper body pressing.....in fact, anybody can bench....if you can control heavy push presses you can always go back to the bench whenever you want and train up to big weights in no time. Plus, overhead strength is just plain cooler because most people have absolutely zero overhead strength, lol.
With the behind the neck variety, I asked Glenn P. a question via PM a little while ago and he said he felt they were probably a better choice than the front versions for guys who trained for reasons besides competitive olympic lifting.