Well, I'm not an expert on the new trilogy or the expanded universe, but I actually know the answer to this one. I think, anyway.
It's Jacen and Jaina (sp?) the twins and Anakin.
Ok, you'll be getting all OT, all the time from me when I play. That's where my expertise lies. So here it goes:
What was the new model of landspeeder that had come out that prevented Luke from getting a good price on his own in A New Hope?