I think by far Ethereum is a great improvement over bitcoin as in terms of blockchain technology. It's prime motive might not be to act as a currency but it does have enough features to be used as one. The smart contract feature is the best I have ever seen.See full review

I find Binance as the best exchange available in market. The funds are pretty secure and there are variety of tokens to trade and almost all tokens have enough volume too. There is no con but yes beginner has to spend some time to get familiar with things. See full review