Creatine is still king. Monohydrate either works for you or not. You can be a responder or not. If you are a responder you will know because you are stronger, get no bloating and you are good on 5g maintenance after loading.
It basically works for you and have no complaints.
Now the other half, non-responders should use Ethel/esther-Creatine. It's more expensive, require no loading and there is even less gastrointestinal distress involved with it. Overall just nicer.
That's what I take and I am a responder because I just take it on workout days. This enables me to not have to keep loaded on Mono over 6 weeks. The better creatine just goes to muscle fast when you take it, you work out, burn it.