Finding the right solution is a very personal experience. If you are a side sleeper like me, you might want to choose a cloth diaper which rides up high around the hips to help catch the voids. Of course, high waisted plastic pants are a must for optimal protection. If you don't want to do down the cloth route, try Northshore Megamax diapers or a diaper which can absorb more than 5 litres. Let us know how you get on please and best of luck finding the right solution for you.
My preference is to wear an external catheter and be hooked up to a night drainage bag connected to the bed under the mattress. This works well for me and is comfortable to wear.