I really love the lip to cheek, though I only use it as cheek as I have a weird aversion to lipstick.
I find it lasts all day, even from 7am to 1am is the longest I've tried and it still was there.
I like the BFF too although it is quite expensive I think it does give a nicer finish than any other BB type cream. I do use cheaper ones for day to day but love trinnys for upping the finish.
I do like just a touch as well, though I wonder if the same effect could be achieved with a pot set concealer- I may try NARS next.
The trinny concealer was lovely but not enough coverage for my undereye which is actually black, so I use maybelline there instead.
The eye pots are great for being able to have a decent eye look in 30 seconds. Though again maybelline do a dupe, but they are slightly harder to work with.
But I'm glad I found her and her philosophy of not hiding the skin. I have great skin and take care of it (she boasts) and I used to cover it all up with thick foundations. Now I prefer to have just a glow and some blusher, and be out the door in 3 minutes if I want to.