I think it depends on what games/markets you want to settle bets

Stake.com is a solid and good brand to use.
Good Website, Good Software, Good Limits and also some nice Gifts if you wager higher amount

Only thing i have to complain about is the offer in general and also the markets on big leagues are inplay not the best

sportsbet.io is also solid a good bookie
Offer a wider range of games compared to stake, but you get limited faster if you play to much on lower leagues
i like the website in general and the side gifts also nice

nitrobetting / nitrogensports are also good and offer a wide range of games. Live it could be more but is ok
But you also get fast limits if you play lower leagues or follow bigger tipster on low leagues

duelbits i´m using at the moment, i think from software perspective its similar to stake, but have more games. I like this site very much, you can collect nice cashbacks.
cant tell to much about limits here

smaller brands i would be carefull to not deposit to much....