The WHG group has the best casinos I think. They are operated by the England based William Hill Company, and they are licensed in Gibraltar. They have the best features set for table games (best limits, options,etc.) and the slot machine payout are on the top as well.
Try
EuroGrand Casino for example, a WHG member. The default bonus is 300%, but in case you wait a few days after signing up, you will receive invitiation to take 500%, and the wagering rules are the same for both. These casinos has one if the lowest wagering rules, and all games allowed. Wagering requirement at Eurorand is 10x deposit + bonus, not every game counts toward the wagering requirements, but all can be played. You can even play the low limit live roulette with these bonuses, where limits starts from 0.15. Show me a casino that will allow you to play 0.15 min. limit roulette with its bonuses. Most casinos don't even have roulette where the limit starts at 0.15
If you want to try them without risk, go to
William Hill Casino Club, the main WHG partner, where you will get 30€ no deposit bonus, and you can also play any games with it. At this casino all games count towards the wagering requirements, even the low limit live roulette, Casino Hold'em and some Video Poker types counts 100% towards the playthrough, such games, that are not allowed to play with bonuses in other casinos. So this is a very generous offer.
Another new casino that appeared on the scene recently is
Sega Casino operated by the world famous Sega Video Games company. Same software as the previous two. They also allow you to play every game with their bonuses. You can get 100€ no deposit bonus from them if you complete their survey, about which ask their Live Chat. It is a very generous and trustworthy casino as well.