I choose the more reputable one, the casino that has been around for sometime. Since their service had already proven and more likely I will face less frustration regarding withdrawal, deposit transactions. I do not look at bonuses since I seldom claim them since there is always a catch if you claim it.
For mine, I always choose the simple one, thus it makes my games simpler and worthy. Unlike other casino game play, it's complicated which interrupt me sometimes. I will always choose simple casino game play to let me be able to understand it easier and quicker.
What exactly is hard for you to understand?
Dice or other casino games are exactly the same, it doesn't matter if you play on PrimeDice, FortuneJack or YoloDice or any other site.
When you have seen 1 game - you seen them all. Then you can pick service with better&comfortable layout, lower house edge, maybe interesting promotions or better reputation.
Does bonuses matter to you a lot?
We at Oshi were working on a brand new bonus system that will be introduced in just a few days, it's called Bonus Crafter and I am really curious how thing like that will be able to change your priorities. See soon.
If your bonus system will be unique and straightforward, without standard hidden catches and requirements - then it will be popular
Just be careful to not complicate things too much or make it weird.