Oddly, and partly infuriatingly, I have hit four ton-80's in the last two days. Two yesterday and two today. This one occurred quite happily yesterday during a fairly long practice session. The session itself consisted of "Choosing Darts", which is a habit I have gotten into in the last several years when I am not sure what darts I want to throw. I line six or seven sets up on my work bench and takes turns throwing games of DD 301 until I am fully practiced.
Since two of my recent maximums have come on these darts with this configuration, I am going to stick with them ;)