[A4] Leather seat conditioning products

[gsackerson at comcast.net]

Hello everyone,
  When I last had my car washed at a touchless car wash, they offered me the option of using a leather conditioner on my seats. Now knowing what products are good and what the result would be of using questionable products, I elected to hold off. Since this is my first car with leather seats (it's a 2006 A4 2.0T and I love it,) I wondered if any of you could recommend products you know and find work well? Thanks for the feedback.

Cheers,
Glenn