However, if you never go past 80% and do multiple sets of them, how the hell do you know where your form breaks down when you actually have to work hard? Not saying you should be 8 sets of 4, but there is a reason why 5x5 is a good medium for newbs (don't remember if you're one or not).
I like 4-6 sets of 2-3 or 4 for two similar exercises. Basically Sheiko.
Once I feel good with the weight I'm doing, I'll bump it up 20 or so lbs and drop down to fewer reps, then work back up to 8. I'll probably bump up to 155 next week and 185 in march. I can probably do 4x8 with 155 right now, but I'd rather have stuff left in the tank when I start that off again. I do other things for legs too and I'm planning on doing FS 2x a week so it's not like I'm not getting a workout.
My main goal right now is to see how my body reacts to doing deads and FS at this point. I'm pretty surprised.