You may not want to wait but I would think the Ameritrade purchase of Scottrade would mean you would have level 2 OTC quotes sometime fairly soon? on the thinkorswim platform. I have been using it for years and still like it very much. In addition Ameritrade just announced new voluntary lower commissions in conjunction with this purchase of Scottrade. https://www.nytimes.com/2016/10/25/business/dealbook/td-ameritrade-scottrade-acquisition.html