Question and Test Banks - stalla vs schweser

I am wondering if anyone has Level 3 experience with Stalla and/or Schweser internet self testing functions (Schweser Pro Question Bank vs the Stalla Passmaster) - I am going to use one of these and just looking to use the better of the two. I am not looking to use a vendors “comprehensive system and or notes” - just looking to use one of these vendors to drill/practice test this materials by taking test like questions to supplement the CFA material. I was note terribly thrilled with Schwesers in LII since it seemed to repeat alot of questions and sometimes just changes the order of choices - I also dont know whether these vendors have adopted the new 3 choice format in their drill… Would really appreciate any thoughts/experience you might have regarding these products. Thanks.