If Binance was smooth and good for you why are you looking for an alternative? Anyway, the altcoin exchanges that are pretty okay based on my experience and are decently reputable are Huobi Global(HBG), OKEx, and probably Bittrex(though I haven't used it in a year). But as always, do your due diligence when it comes to any exchanges.
I certainly agree with you. As for me, Binance is one of the most trusted exchange and I have no doubt of that. You're already on the right track so you better not look for higher criteria. If you're too experimental and want to try a new exchange, be sure to check the reviews and legitimacy of it.