Your call Marc, choice (a) ease of checking through but risk of losing bags (b) long lines and hassle but your bags will make it.
I am going into LAX the night before so I am going to only check into LAX as I had too long a layover to check all the way through anyway. We have always done that. The lines are now just longer at LAX so it causes me to rethink that advice I have always given in the past.