I have the Blue Ox Tru-center on my 2008 Georgetown and it works great. Just as Iggy said there's no magic bullet for your steering, but it does help keep you going down the road straight. Really helps in high winds and when you pass or are getting passed by big rigs. The thing I like about the Tru-center is you can readjust the steering wheel center while you are driving. I've used it when going down long stretches of road with high cross winds and it really helped. It is easy to re-center as well.
Hope this helps.
Bubba & Chiquita + Two Vizslas (Barley and Sophie)
2008 Georgetown 315DS SE LTD
2011 Jeep Wrangler Unlimited Rubicon
Sterling All-Terrain Tow Bar - SMI Stay-In-Play Duo
Do What You Like - Like What You Do!