Just go for the optimus l9.
Reasons- awesome screen as compared to the other 2.
Great battery life ( mine lasts for 2 days with moderate usage)
Optimus ui 3.0 roxxx, the animations are buttery smooth and look good.
I hav owned many samsung android devices and the touchwiz ui has always dissapointed me.
Above average specs for the price
-ves..... low internal memory of 4gb out of wich 2.7 gb is available.
5 mp cam, even though it takes decent shots...
Size cud be a disadvantage for ppl wid small hands.