Personally, I'm sticking with Bitcoin.  I see it this way -- because it is trivial to "restock" my supply of bitcoin, I don't hesitate to choose it as the currency I use for spending.  And because when I spend using Visa/MC/PayPal, the merchant gets less than a dollar for each dollar I spend, I believe it is only a matter of time before we start seeing incentives from merchants driving us to use Bitcoin as the payment method.  i.e., I as a consumer gain more from using bitcoin for a payment than I would gain as a speculator from the increase in its value.