Update in comparison. Note, I did not use windex but a generic window cleaner!
Test conditions: country kitchen, no kids finger prints to worry about, but a fair bit of dust and pet hair need cleaning up.
well, I thought the window cleaner would be quicker to buff, as that seems the main advantage....but kind of the same time for a streak free finish to be honest. They show no real difference in dust collection (again, the top oven was Baby oil, the lower one windex....may be if reversed the baby oil would have got dustier?) To be honest, the baby oil is shinier IMO, and I will use it, simply because I don't use window cleaner at home (I use vinegar) and I do use baby oil for other things. The baby oil one buffed slightly better in rushed dry cloth buffing btwn cleans, but again, just because it was slightly shinier in the first place (neither need a proper surface re clean yet, seem to be lasting the same) If I had a brushed SS surface I might feel windex was easier, or if I had it in the house anyway...
I really feel based on my "test" its horses for courses. I'll stick to baby oil, I like the shine, feel happy using it and don't usually buy window cleaner, but I would not buy it if I were happy with the window cleaner already.
So, although I haven't really cleared anything up really, it was interesting to compare!