Is this for you personal car or customer cars??
If this is for your personal car, then I like 4 Star leather products.
If this is for customer cars, try Liquid Leather from 3d International. I've been using it for about 3 years now and I've never had a negative response. It smells like leather with a nice sheen that can be buffed to suit your needs. Best of all, it's economical as you can get a gallon for under $25.
For interior dressings, I use Natural Look or 303. My APC is $ Star White Lightening (but I may go back to 3d because of the price).