I have a few favs....
I'm currently
Tarte's Lights, Camera, Lashes! - I'm not crazy about the funky package and the $18 price tag, but the actual mascara is awesome. No flaking and no clumping. Makes my lashes look fuller and longer.
Max Factor's Lash Perfection and Lash Perfection Volume Couture were/are my d/s brand favs.(I couldn't really tell a difference between the 2. Both perfomed the same on me.) The price is right and the acutal mascara is not bad either. Flaking and clumping is minimal.... Made my lashes look slightly thicker and longer.
Lancome's DÉFINICILS - High Definition Mascara used to be another one of my higher-end favs. (I haven't used it in a year or so and can therefore not judge the current product.)
If you need extra help in the "lash department" or want to up the ante with a mascara that doesn't perform as well as you want... I'd recommend getting
Shiseido's Lash Primer. It a HG lash product for me.
I'm thinking about trying out Dior's Diorshow Mascara, once my Tarte mascara needs replacing.