X2
We were able to do a small roast and a few veggies around the sides in our 100, but it was only just enough for 2 adults and 3 small kids. But the kids (12, 10 and 6) are now.eating more, so we struggle to do more than the meat. If you do go the 100, get the high lid version. It is only 1-2 cm higher but I think it would make a big difference at being able to fit a few more veggies around the edges (we have the standard lid and I regret not getting the high lid).