allright so i went to buy a mid yesterday. only core's at store were 168 and 167 but they had a crystal z buzzz 178 so I guess the disc gods were telling to stay with the buzzz. mako is a great straight mid anyhow.
Latitude 64 is one of the "good manufacturers." You can argue that their molds aren't as good as Innova/Discraft (I think you'd be wrong), but what you can't argue with is that Latitude 64 has better/more attractive plastic than either of them. BTW, have you ever thrown the core?
I "pulled out" my whole life with 100% success, then two months after the wife started "the pill" she was knocked up! The moral of the story is if something is working for you don't change. It (the core) may work out but most likely it will/can only bring drastic failure.