Funny semi-unrelated Panda story: If you bought 2x 1/2oz Gold Pandas from 1983 instead of 1oz you would've made at least 10-20 times more money in 2012. Give or take, rough estimate. Might even be 50x.
For me I would go for either tiny 1/10oz Gold or 1oz (coins). The 5gm/10gm Perth Mint cards...