Gemini Exchange is one of the trusted and reliable centralized exchange in the crypto market today. Founded in 2015 by Winklevoss twins and based in New York city, USA. Gemini is own and control by Gemini Trust LLC. Gemini is highly regulated and try to be compliant with every regulations of the land concerning cryptocurrencies.
Gemini is available in USA, UK, Canada, Puerto Rico, South Korea, and Singapore. It only has support for few cryptocurrencies and fiat. US dollar account are insured by FDIC.
It accept deposit from Automated Clearing House(ACH) in US, it also accepts wire transfer but this go with some fee. There are 6 tiers of transaction fee and the transaction fee depend on the 30 days volume. As pertaining to withdrawal, the first 30 in a month is free.
The exchange is good for both retail and institutional traders. Because of those involved and to comply with legal requirements a deep KYC use tone carried out on each user before allowing such to trade on the platform. Gemini has a very good customer support service to care for its customers.
Gemini though has little deficiency but it's positive side outweigh it, so if you are in the country where Gemini is in operation you can try it.