Blue box questions in Schweser and/or CFAI non-EOC questions?

Are these helpful or are the CFAI EOC questions enough? There are within chaper (non-EOC) questions in CFAI text. Are these questions just a rehash of EOC questions?

Extremely helpful.

Not all are rehash.

Considering the 40% pass rate. rehashing is not a bad idea either.

CFAI within chapter questions and EOC are very helpful. more than those of prep providers.