Here's what I've noted on my vat dyed Mercedes black leather seats which are now 12 years old.
I've tried nearly every Meguiars leather product (except the Aloe) I've used Lexol's cleaner and conditioner, I've used Griots and just last week I used Leatherique.
Meguiars products work well on Japanese and painted leathers in general. The Medallion cleans well and conditions well but doesn't smell like leather....argh. I wouldn't use any of their creamy products again on my perforated leather, don't ask why. The Rich Leather product is just ok, not a good cleaner and average conditioning. Ok if you need a quick touch up but too shiny and oily for me and smells artificial.
Lexol cleaner is just ok, I personally didn't care for it to be honest. It does soften the leather after application but it doesn't last more than a day. Lexols conditioner is good but it smells horrible IMO. I couldn't stand the way my car smelled after application. It also only works well on vat dyed leather. I tried it on our painted leather couches in the family room and it is way to oily and you can feel it when you sit on it. It doesn't soak in at all. Maybe the leather is super cheap.

Either way as you can see I'm trying to find other uses for it.
Griots Leather Conditioner is an excellent maintenance product. It has mild cleaning and good conditioning abilities, which are perfect for use every 4 weeks. It also is by far the best smelling product I've ever used. Nothing compares in the smell department including Leatherique. It does leave a slightly satin finish which I like but others may not. Again this is a good maintenance product not a restoration product. It is also very easy to use.
Leatherique Rejuventator Oil and Prestine Clean are superior to anyting I've ever seen. It left my seats looking exactly the way they left the factory (I compared them to a 500E that has 8K miles

) It is the most difficult of the three products to use and takes nearly a day to complete the project but the results are simply amazing. The grain in my leather really stood out and the leather softened up considerably. It is also a completely natural look, no shine at all if you follow their instructions. I would highly recommend this to anyone who wants to improve their leathers appearance and feel. Keep in mind this is vat dyed leather so painted leather may show different results. The smell of the product is ok, not as good as Griots but certainly better than the others. Tom also do a search on Leatherique, I believe one of the Bimmer guys used in on his M3 with great results. He also did a write up on it.
IMHO if your trying to maintain your leather in as good a condition as possible I would use Leatherique every 6 months or 1 year depending on the usage of the car and use Griots (or other favorite product) every 4 weeks for maintenance.
On that note I should say I've never used Connoly's Hide Food, although it's creamy consistency scares me since my leather has perforations so I doubt I ever will try it.
Let us know how you like the Connoly.