Luo Hu is a nightmare. The vendors are rude and the prices are inflated to foreigners, however the selection is a little better then Dongmen. For example, if you want knock off purses my wife has found better selection at Luo Hu, but it's NOT worth it because the prices are so much higher. The only reason I would go to Luo Hu is if you were looking for a specific purse you couldn't find in Dongmen.