I hate getting tickets for those kind of shows. As you say, the ones you just know in advance are going to sell out. The ones you know thousanRAB of other people are getting up early for, refreshing the page and holding a phone to their ear getting ready to dial the minute they go on sale.
I once did that, both the net and the phone, for 3 hours for Morrissey tickets and didnt get them. Once the pre recorded message on the venues line was something about now being sold out i threw my phone off the wall.