Answered[ Edited ]
I like cover girl Lash blast (in the orange tube). Some people really like the Cover Girl Clump crusher mascara (green tube). Both of these do not have the traditional mascara wand (they are plastic and dense, check out recommendations below for more traditional wand styles).
I've heard great things about Maybelline mascaras too (Maybelline Volum' Express The Colossal, or the Rocket). I actually recently purchased both because of the raving reviews - i want to do my own comparison and review on them.
Loreal Voluminous Mascara (original or carbon black) are a few good Loreal recommendations.
Sometimes a mascara formula may be a little runny in the beginning and you may write off the mascara as being a dud. But after a few weeks the mascara thickens up a bit and can be the BEST formula ever.
And if you can, try to get some mascara minis (deluxe samples) in your Sephora orders. I love trying new higher end mascaras and have found a few that I would be willing to splurge on.
Hope this helps