The beautiful thing about all the Staking Providers listed on the Elrond website (explorer.elrond.com/providers) is that they all use the same exact Smart Contract which was audited and certified by Elrond, thus making every Staking Provider very safe and secure.

There are only a few things a Staking Provider can customize for their own company and that includes the Computed APR, Service Fee, Delegation Cap, etc.