I think that CoinDeal is doing better than Bitbay at this moment, because it is constantly developing. CoinDeal will be available at the USA and BitBay won't. CoinDeal team organises a lot of initiatives for their community. Now, it is said that their users will receive free tokens, here it is the
articleBut, on the other hand, BitBay is on the market from quite time, and they have bigger experience than CoinDeal. It might be also a disadvantage, cause their lack of fresh view might be a problem in that vastly changing industry which cryptocurrency world is, but it shouldn't be neglected too.
I live in Poland from quite time and I'm keep an eye on crypto industry here - it's very interesting how Poles are getting more excited about it. And both BitBay and CoinDeal are excellent examples that cryptocurrencies might have a bright future here - especially when they're starting to expend outside the borders, like CoinDeal is doing right now.