Products I use/used:
Clinique Brush on Cream liner in True Black and Black Honey - fab texture, highly pigmented, easy to blend and large quantity of product in comparison to BB and MAC
Bobbi Brown - superb staying power, good texture, easy to blend and good color selection. The new formulas don't dry out quickly and Bronze/Chocolate Shimmer are must haves for brown eyed gals IMO.
MAC - best gel liner for tightlining and to use on the waterline, minimal smudging, creamy enough to control the thickness of the line but dries quickly, great color selection. My faves are Macroviolet, Waveline and Blitz n Glitz
Stila - larger quantity than MAC and BB, highly pigmented, slightly more "soft" than BB and MAC, zero smudging, very good staying power, decent color selection. I like Black, Bronze and Jade.
Laura Mercier - highly pigmented, very easy to apply but too pricey for the quantity of product. Plus the quality isn't superior to products by MAC and BB. I use only one shade - Caviar - for tightlining.
Products I have tried out but didn't like:
L'Oreal Hip - smudged a lot and very limited color selection. But for a drugstore item, it is quite reasonable given the quantity/price makes it more economical than MAC and Clinique.
Kate - very basic, hard to find and product in the pot dried up quickly (I have BB, MAC, Stila gel liners that have lasted more than two years)
Smashbox - average quality but pricey product - I tried out only Black. Stayed on the waterline for about eights hours but once I discovered Clinique True Black, I didn't bother going back to Smashbox.