NB: This is my personal opinion based on my use of the betting site
Ixbit is one of the betting site I use especially when I want to bet with cryptocurrency. I have been using them for more than 3 years now so I will give my personal review.

Reason why 1xbit is the best for me
1. They have various betting options for soccer which I do not see in many betting website. 1xbit is one of few betting site that have various betting options for corners for almost all clubs including lower leagues
2. They have fast withdrawal for winning (note: my highest withdrawal is 100 mbtc and it was processed within 4 min. I have not withdraw higher amount on the platform)
3. They offer bonuses that are withdrawable ( I was given 10mbtc recently and withdrew 257 USDT https://tronscan.io/#/transaction/076b663d89f2ce45ba5595cfb174b7918f45ccd66a95555535571635cadeda69)
4. 1xbit android app is easy to navigate and make betting easy
5. They offer points when you lose or win a bet. The points can be converted to promo code which give you opportunity to win
6. They support various cryptocurrencies

Some important aspects 1xbit need to improve on
1. Recently I have discovered change in web responses on my phone. 1xbit need to test site response on various gadgets in order and solve multiple problem
2. more social pages interaction with posts about weekly highest payout with verifiable links