In the 2016 Consumer Reports Buying Guide, the 2010 LS was rated "Much better than average", overall. The only trouble spot is the suspension category, which may include:
Shocks or struts
Ball joints, tie rods, wheel bearings
Alignment, steering linkage
Wheel balance, springs, or torsion bars
Bushings, electronic or air suspension.
I would suggest having a well-respected alignment shop take a look before you make a buying decision.