280. As someone who's been aware of the modded MC scene since the early days, I still find myself revelling in awe at the amazing things that have come about, and feeling lucky! I remember when I first saw things like the old IC2 macerator and wires, the RedPower machines and tubes, the Buildcraft quarry and its pipes, and being absolutely blown away. Not to mention the delightful creepiness of Thaumcraft 2, the delightful variety of Mo Creatures...
And its just got better from there!