I agree. Silver is silver to me. I did some calculations when I was shopping for 100 oz bars. If you get an OPM bar ("reclaimed" silver I believe they call it) the premium was about 3.1% but if you wanted to get one of those purdy APMEX struck bars with the mirror finish the premium was 10.9%... on 100 oz! JM fell right in the middle at 6.7% for a 100 oz bar.
Once you get to the 10 oz and 1 oz bars you can end up pushing 15% per. Right now on JM if you buy 100 ASEs by check, the premium is 17.8%.
You can think of the ramifications of the premium in a couple ways. Take the ASEs through JM. You can say, I hope silver will rise 17.8% so I can BREAK EVEN. Or I like to think of it as having to pay 17.8 extra ounces of CRH silver to buy LESS SILVER (if you're trading 90% for bullion). If it's cash, it's just $300 down the tubes that you can hope to make up later.
Like I said, to me silver is silver. I'll likely be going the OPM route. TZ, what kind of 100 oz. bars do you have?
Edit: Note, my calculations might come out different than yours. In some but not all cases I included my credit card cash back rebate and/or shipping costs.