Which is better-samsung core or samsung quattro(win)? I'm planning to buy a android phone?

I'm planning to buy a android phone.so i searched for many phones and shortlisted these two which is in budget… Galaxy core is good phn no doubt but i'm little tempted to big screens so i'm thinking for quattro but as i heard from people that this phn is facing sum performance issues.bcoz of this i'm confused to spend my money for this phn bt really want bigger screen otherwise core is the last option
so any of u here give me suggestions regarding this phone's feature and obviously performance
Quattro users comment will be preferred

My sister uses quattro. She has no complains. It will be better than core.

Phones which are in similar price range:
1. Nokia Lumia 720. ( Windows 8 phones are really awesome and nokia lumia camera clarity is outstanding)
2. Sony Xperia L
3. Lenovo IdeaPhone S890 ( Screen size is 5 inches)

My friend buy this http://preview.tinyurl.com/lla98vw s4 smartphone android 4.2 MTK6589 single-core dual core 1G 4.7 inch 13.0MP camera.It under €85. Hope it can help you.

Go with xperia m… Core and quattro are not worth to buy it