Here are some that I subscribe to (I love RSS feeds on my smart phone):
Originally Posted by Anikdote
Greg Mankiw's Blog. He's head of economics at Harvard. Not libertarian, but is very intelligent and very analytical. He'll discuss anything fairly.
Cafe Hayek has a number of those guests you mention as regular contributors
Carpe Diem is more commodity oriented and has a great "markets in everything" pro-capitalism bent
EconomicPolicyJournal w/Robert Wenzel. More of a Lew Rockwell libertarian with great material
ConsultingByRPM - this is a must read. It's Robert P. Murhpy's blog and he regularly tears apart Krugman in a very analytical fashion. He's actually quite fair and will explain where he agrees with Krugman, where he's been wrong and why his new info is more correct. A warning, though, is that he uses his blog for his Christian views as well (and takes a lot of heat from atheists.)
Center for the study of innovative freedom. Stephen Kinsella's blog and is mostly anti-IP, but often discusses the economic damage of IP laws.
"The principle that the end justifies the means is, in individualist ethics, regarded as the denial of all morals. In collectivist ethics it becomes necessarily the supreme rule" -- F. A. Hayek.
"A day, an hour, of virtuous liberty is worth a whole eternity in bondage" -- Joseph Addison's "Cato, A Tragedy" (1713)
"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion." - Albert Camus