I normally use some booster pad when I'm wearing a disposable, mostly to bulk up the diaper.
I recently bought a pack of the "refill large Goodnites Sleep pads" and my god, is it one of the best boosters out there. It completely outperformed the normal tranquility one and the huggies size 5 diaper. I did poke holes in the backing(even though it's not plastic) just to make sure it soaked through.
I paid $8 for a pack of 16.