Gemini vs Coinbase

I use these 2 services primarily to hold fiat and exchange between my own bank and brokerage accounts. Anyone prefer one over the other? I think GDAX has the best trading platform but the $10,000 daily withdraw limit is quite limiting. When I logged into Gemini today I noticed they increased my daily bank transfer limit (ACH) up to $100,000 without my asking. Because of that I'll probably use them until Coinbase approves my increase.

Pros of both: Fairly reliable, they have FDIC insurance on cash balances. I trust them more than any of the exchanges. No problems with any transfers going through for the most part. Both are secure, asking for photo IDs and offering 2 factor authentication options.

Pros of Coinbase: The GDAX platform is much more robust than Gemini's trading platform. NO MAKER FEES on GDAX.

Pros of Gemini: Better uptime because the site doesn't get overloaded as badly. Higher daily withdraw limits, and unlimited withdraw limits in BTC.

Cons of Coinbase: If you use coinbase itself for trading the fees are on the high side. Best to use GDAX and transfer the balance back to coinbase.

I have noticed arbitrage opportunities between these 2 exchanges should a person manage to get their withdraw limit increased on GDAX. I've seen BTC prices be $100 different at times, especially during larger moves.