I also have combination skin, and I love LM Powder Foundation. The levels of coverage it gives are fantastic: light coverage with a brush, medium with sponge, full with a wet sponge. LM PF didnt emphasize my dry cheeks, and kept my oily T-zone matte throughout the day.
I did not care for Bare Escentuals. My face itched like crazy with BE; I think it was the Bismuth.