great trading platform for a bunch of altcoins, been there for 2 years and didn't have any issues yet. (steemit.com)
Ally Invest has created a great trading platform that also has low commissions. (thecollegeinvestor.com)
After all, if you need or want timely service, fast order execution time, a great trading platform or educational resources, all of those components change what you would be willing to pay. (sparxtrading.com)