I have done more than a search for the best option with Check 24 and generally have been happy of the results. Only twice I have actually finalised the contract. One of the two however I did not had a great support. I made a contract with Cable Surf, and was advertised as a special Check 24 condition. It took me 2 months to get out of the contract, and unfortunately given to the lack of support in that moment I decided to subscribe the new phone contract directly. The second time actually went better.