Well here you are absolutely right, I support what you say a lot when it comes to personal experience I always focus on choosing the sites that have the most reputation, this usually by simple inspection it is known that they are the best in giving support, the best As for RTP because they usually have it balanced, and that above all the money that is deposited in the sites is to have it safe, in addition that the big sites always provide the information when a player wins the jackpots, the casinos always praise their best players.
NUMBER ONE is odds. Value, house edge without bonuses and just plain old regular betting for me,,, but Reputation is absolutely crucial, as in, do they pay or not. I even do not mind bad support and whatever if they pay. As opposed to kind and friendly support but long delays.
Number Two only goes to rakeback, promos etc. It is nice to have but I actually do not always find it fun to keep looking out for promos just to lower house edge
