I think gold is currently undervalued. The global economic situation makes me think gold price suppression is mammoth compared to silver manipulation, and frankly that much of the world is in denial.
Different parts of my stack are for different purposes - I held about 50/50 gold/silver by value, but silver has outperformed gold recently so that ratio is skewed. If I was a new investor entering the PM market today I would be nervous about buying silver first as a long-term hold. Unless you believe there's a repeat of 1980 in the works (and there could well be) the relative value of silver could crash quickly against gold - even if it continues to grow in fiat terms.
So my gold stack is my "long" stack - and silver is split roughly half into "long" and "speculate". The speculative part of my silver stack is peering anxiously at the GSR going "is it time? is it time?".