Best Checkbook Control SDIRA Provider?

[Alvin Grier]

I have a friend that wants to lend on some deals, but he needs to rollover to an SDIRA that gives checkbook control.

Do you know of a provider that I can recommend?  

I've heard about iDirect Law/Guidant Financial, but I've read reviews that they are lacking in the customer service department.  

Do you know of a provider that you've personally had (or currently have) a good experience with?