I have:
42″ & 32″ samsungs in the front room and a 37″ LG in the sunroom.
LG is pretty good except the speakers are in the back of the telly so sound can be a bit poor. has an auto adjustfeature for lighting which works a treat in a sunroom.
Samsungs have better sound with the speakers at the side and bottom, but have trouble if there is a lot of red on the screen, it tends to blur the lines quite a bit. ALso one came with shop display setting which it would keep on reverting to, bit of a pita and nneded to google a bit to find how to turn off properly.
Oh, samsung remotes have a wide angle of control compared to the LG.
Apart from those issues I can’t tell them apart picture wise.