Lexol!! Been using it since day 1. Great product! Keeps seats clean and soft!!
Use the cleaner, then conditioner. Seats feel soft and and look great. Use the cleaner every 2 or 3 months, use conditoner about once a month.
I've been using the Turtle Wax Platinum series on mine. It is one bottle that is supposed to clean/condition. I have also been using the Ultra Shine Protectant spray for the dash, etc. I have found the leather stuff doesn't leave it slick or shiny, but the protectant spray is also for leather and will make it shiny, so it is kind of your preference if you want to spray it on afterward.
I have been using it every week, I know it's kind of overkill and I will probably go through a small fortune of it, but I am still in that new to me car phase