It's funny, I didn't really buy the PG500 for it's grilling ability... in fact in two years, I've probably used the direct grilling less then 12 times total. I've probably cooked probably at least 120 other types of cooks on it.
For my small family of 3, it's really got enough grilling space on it, but I could see that if you wanted to grill for a lot more people the direct grilling space would start to get pretty tight. But for me, it's really wonderful... 10 or 15 minutes tops to get it up above 650F, another 10 minutes or so to cook... and then I just turn it down to 170F for a little while to let the strong flames die down , and flip the power switch back off... couldn't be much easier really.