I tend to prefer different items from both brands - I still have the LG duo lip and eye primer and think it's brilliant, also prefer her concealers - what really surprised me was that I also just about prefer her baked eyeliner to the smashbox eyeliners - I am amazed to find myself thinking this way, as I also really like the smashbox ones. I have had a slight reaction to one of the LG shadows, and this has never happened with smashbox - I also prefer their lip products. For mascara it's Lancome or Avon for me (my daughter sells Avon so I feel it's only right to support her, but have been surprisingly impressed by the mascara for every day). Used to love the Smashbox Seamless foundation, bought the replacement and returned it, have yet to find one I like as much as Seamless.
Enjoy Sephora, the one at Times Square blew my mind! If you are going to any of the Outlets (I went to Woodberry Common and it was amazing), have a look in their beauty shops - my friend bought Bobbi Brown at ridiculously low prices (I took so long going round to Gap, Timberland etc I didn't even get to the bliddy shop - was royally fed up)