The only difference is the 165 has a resin inner platter and string anti-skate. 7mm and 10mm bearings are found on both the 165 and 160. A lighter set of springs on the 165. What the resin platter looses in momentum it gains in dampening. And I'd always be happy enough with string AS. I even kind of like it.
All the other parts are the same more or less, and as the others have said, the tables can be modified in exactly the same way. Also I'd imagine both to be as frustrating to set up as the other. Locating 2mm screws just the right length to mount a cart, suspension tuning for the perfect bounce and VTA adjustments are the biggest challenges for both tables. Setting a string AS is childsplay in comparison.