Bigger debate (in my brain): Add an amp to my current setup (5B, 5C), or move up to a 6C and 6Bs. Eventually both, I'm sure.
Mostly, now that the dipole 4-series are out, if they're going to make changes to any of the rest of the line (like the magnetized grills), I'd rather wait on new speaks.
Of course, with those open box 6Bs on this site burning themselves into my eyes, the temptation grows stronger...