I don't see any reason to run a crank pulley that's both bigger and solid. The point of the solid aluminum pulleys is run smaller and lighter, both for reduced MOI and so that your accessories won't spin as fast and rob power. Bigger will cause your accessories to over-spin which could even damage them at high enough rpm. Also, you lose the harmonic damping effect which can cause crank and/or component failure. IMHO you should only ever run a stock crank pulley, or if you're feeling frisky you can use either a FluiDamper pulley or one of the Buschur units. The FluiDampers are a little pricier but they're also more sophisticated.