Leg presses and squats are totally different strenght concepts, as an example I leg press 1500lbs but I can only squat around 400lbs. (those are large weight numbers, please don't try to match those, that's not ego, just a safety thing) Civvy, you shouldn't ignore your leg muscles, if you want to be fit and strong you have to exercise those muscles as well. The largest muscles in the body are in the Legs and Back and those are the parts that often get ignored. As far as increasing your bench press goes, you have to get stronger all around, not just the chest, many people make that mistake. A bench press involves your shoulders and triceps quite a bit as well. Try this to boost your bench, Add Tricep Bench dips and Tricep pushdowns, also add a military press and side raises to your routine. A stronger set of shoulders and Triceps will help with your bench press. (As a word of caution, you shouldn't always try for your one press max, try it once a month) Also about the muscular endurance thing, that's been ongoing forever, a strong muscle is an enduring muscle. In short, do what works for you, but the old lite weight high reps for endurance and heavy weight low rep for strenght does work. Hope this helps!