Sure, you can run OS 9 and other heavy PowerPC software on that thing, or you can look for vintage software which will run more comfortably. And I would wager that often in that case, there will be 68k versions of the same software that will run better on the 280 than the 2300 because the 2300 has all the drawbacks of NuBus Macs but in a tiny little case (with no L2 cache). But that's just my opinion having used both a 2300c and a 280c and having found that the 280c is generally faster.

But you are right, for tasks which require an FPU, the 2300c is a requirement. Just try running RealPlayer on the 280c!

Peace,

Drew