i want to purchase dual core phone having budget upto 20k.....!!!

hello guys..
guys plz suggest me an cool dual core phone which supports full hd video having good camp etc my main requirements are..
1.full hd
2.good camp
3.dual core
4.4.0 inch
these are basic requirment plz suggest mee..

i have shortlisted some cell phones
1.galaxy s advance
2.xperia p
3.lg optimus 3d etc am bit confuse help mee...!!