well it seems that there is bitsetting, and then there's pioneer's version of bitsetting, as far as the 108 goes.
I have several disks apparently bitset to dvd-rom burnt by my pioneer 108, that won't play in my standalone players. I have a few bitset dvd-rom disks that will, but they were burnt by a benq burner and an older single layer ricoh burner.
Personally, if you haven't already paid for a drive at this stage, i would consider choosing a different brand that absolutely bitsets without any doubt. eq HP, liteon, and the benq probably being the top choice. But apart from bitsetting, the 108 drive works great! Hasn't stuffed a non bitset burn yet, on any media I've put in it, and even the "bitset" disks still work fine in a computer dvd-rom. You just have to question whether the pioneer is genuinely completely bitsetting the disks.