Oh i forgot to mention, They have absolutly free withdrawls, which probably cut a huge amount of fees for me over coinbase.
Gemini is owned by the winklevoss twins "facebook fame", I believe they gear to institutional investors. i believe they are just as regulated as coinbase. I get replies by them in 1-2 days or less, I coinbase ticket 4 months ago multiple times. Still no response.
RE: How to avoid Fees (Zero) while trading Bitcoin, Ethereum and Litecoin?