I just had the entire front end redone this past weekend... steering linkage, ball joints, stabilizer, and shocks.
Couple things I have noted...
I had about 100k on the replacement Moog ball joints, and they were still relatively tight... I replaced them because I used a poor quality grease that allowed water into the joint, resulting in rust. I feared they were bad (regardless of what they felt like) and replaced them as preventative measure... not because they actually tested bad. Point being, use a good water resistant grease...
The steering linkages were OE, with 265k on them... to check them, they appeared tight (even laying out on the ground). They only showed up as being bad when watching the steering cycle on the truck... the joints move up/down (vertically) on the ball stud. I actually know these have been loose for several years, they made it through our state inspection each time without question. Point being, make sure you're actually finding the culprit of your DW...
I replaced my components with all Moog (and not even the 2008 upgrade), truck steers like it did when new. If I get another 265k on it, I will be happy...
My lower OE ball joints had measurable play from the day I drove it home... it never really got any worse. I almost wonder if (since unlike their Dana counterpart) because the AAMs lack any ball joint pre-load adjustment (that little four-tang threaded insert used in upper ball joint of the Dana application), that without weight on the joints the lowers wouldn't always tend to feel loose (horizontally)?? The uppers should obviously be tight horizontally at all times... but by design, the uppers allow the lowers to move vertically.