I have the Ballistic springless arm and cap for the drivers side. I ordered them while in Iraq, had them shipped home, so I have no idea how long it took for them to arrive. Other than that, no issues with Ballistic.
The spring-less arms are definitely a step up in death wobble prevention. Look into getting a set of the bronze kingpin bushings too.
Also, depending on how tall your truck is, the drag link angle might need some attention. If it's too steep, it'll add to the death wobble/bump steer issues. You want the line from the passenger side end of the drag link to it's attachment point on the pitman arm as level is possible. My truck has 8" springs up front and draglink angle was horrible. Chatted with Stephen Watson at KOH, who pointed that out to me as the probable cause of my dw/bump steer issues. I chose to actually lower my steering box on the frame by about 4" to correct the angle issue.
Make sure all drag link/tie rod ends aren't worn out. Also, be sure to check out your wheel bearings. If they're loose, it can contribute to death wobble. The stock D60 hub nut system could use some improvement...I've always had issues with them not locking like intended, or the little tit on the inner washer being busted off. I picked up a set of the Stage 8 locking spindle nuts while at KOH. Expensive at $79 a side, but they'll never loosen.