Nero Express/InCD

I have used both Nero Express 5.5 and InCD 4 but the thing is when I use Nero Express using multisessions I use alot of disc space on my cd-rw’s but when I use InCD I hardly use any space. I like using Nero Express but I don’t want to use alot of space. Anyone know why this happens and is there anyway I can fix this?

Windows ME
Liteon 52x32x52
Imation 10x-24x media