Both are solid sources. If you're strapped for time CF is probably a better choice as I found it much easier to get through. If you can sit down and actually study then I think BP is superior and definitely more comprehensive.
There are about 7 chapters in BluePrints that are super high yield and will get you a P if you only learn them (most of them are in the OB section). I used BP + UWorld as my core sources and did CF when I had downtime between patients. OB was my highest shelf score by far, 89th percentile while almost every other shelf for me was 67-72 percentile.
Just pick the one you feel more comfortable with. If it's CF you need to know it more inside and out imo as it's less comprehensive. Didn't use UWise because our school didn't have a subscription to it and wasn't about to pay for yet another resource. UWorld was fine though.