I have no experience with those two, but I have had good service from Wahl brand trimmers and clippers.  I have also had better service from models that use disposable batteries rather than rechargeable.  I have had to trash several trimmers that use rechargeable batteries just because the batteries will not hold a charge, and disposable batteries last a long time in them.

I cannot say I am up to date with the current models, I have not needed a beard trimmer in the past 5 years.