Snap Circuits Classic SC-300 vs Snap Circuits Jr SC-100, which should I buy?

The SC-100 is the entry-level kit (around 30 parts, 100+ projects); the SC-300 nearly doubles the parts and triples the project count. Forum discussions on homeschool boards lean toward the SC-300 if budget allows, because kids tend to outgrow the Jr quickly. The SC-100 is the safer pick if you're unsure the child will stick with electronics.