Hello,
from our experience we found that D415 has a smoother depth data than L515 on closer distances. L515 seems to give better measurements than D415 only at distances >2-3m. Another issue with L515 is its use in a multisensor setup, since these sensors might interfere with each other. You can correct this however by performing a hardware synchronization. But in general we would recommend D415.
As for SDK, in principle it can work with any sensor(s), as long as you are able to retrieve depth and color images from it. We have an SDK sample ( MultiViewReconstructionRealSense) which shows how to use RealSense sensors for the reconstruction.
Let me know if you have any further questions.
Best regards,
Olga