Rainbet is definitely one of the best casino in the forum. Since I made account there, I have played there more than any other casino. I have not had any issues with them and I'm enjoying daily and weekly rake backs which is higher than anyone that I have seen before. Like you said, they have huge potential and if they can sustain their presence in the forum, I'm sure they will be able to compete with the big names in the forum.
With this statement of yours, I think is a go ahead for me, i will be registering anaccount with from now, I think in casinos, what matters.is credibility, your statement is convincing considering the fact that you have actually make use of the platform, so that has given me more mind to get registered with them, many gamblers are afraid of some casinos because no one wants to have a horrible experience of difficulties in depositing and withdrawal, another thing is not being able to get their funds after winning, with all you said I think they should by now be competing with other casino here already.