Hmm..there are a lot of different products out there. A lot of them are brand specific, tho I question that one.There is a new products I just got for free with my new custom saddle. I wasn't impressed with that stuff myself. It's called Lederbalsam. Would not spend money on that product.
It also really depends how you like to clean your saddle. Many products with different ways of applying, different textures. There are also many different types of leather so that will affect what you like should be using for your tack. :)
I've never used a cleaner on my suede seat. I just use a stiff brush to raise the nape. This usually helps it look good.
I use Murphy's wood soap and water with a sponge to clean off the leather when it gets really dirty and to get the sweat/salt build up off. Then I use some stuff called Skidmores to moisturize it.
I love the Skidmores. Once a year I do a light neetsfoot oiling.