I'm going to have to say my 224, 219, 227 and my old discontinued 216. I sometimes use my discontinued 259. Holla back at the old school MAC brushes!!!!!!!!
The 216 is discontinued? I just bought it on Belleforte (a site I found in an ad while browsing here) and it was a steal! I also got the 129, 211, 266, and 213 all for under $9 each!