RE:SSV Vs DSVI invest in both (as should any serious silver investor). My investment $$ allocation is about 60/40 in favour of Discovery.
A rough estimate of the mineral wealth between the two companies would show that DSV has about 5 times the resource size than does SSV. I like to use that 1:5 ratio as a gauge to determine how to allocate funds between the two companies: if it takes more than 5 shares of SSV to buy one share of DSV, the better value is in SSV at the moment, whereas if it takes less than 5 shares of SSV to buy one share of DSV the better value is in DSV at the moment.
Both projects are well underway, but DSV seems to be closer to either being acquired or going it alone as we are approaching a build/finance decision post release of the FS.
Like I said, both are worthy additions to a junior portfolio. These two are arguably the best of the bunch if you ask me (not that there are that many sizable junior-controlled silver projects available globally).