It's still best to go with established brands like Samsung, LG or Sony - due to their proprietary color-image processing and after sales warranty. You can already buy a Samsung 4K UHD with that budget. Example below is from Voltz - a reseller in our marketplace.
***Samsung UA-55KU6000 55in 4K Ultra High Definition (UHD) Smart LED TV***
SRP: ₱62,999
My price: ₱36,990
FEATURES:
- Series 6
- 4K Ultra HD LED (3840 x 2160)
- Smart TV
- Built-in WiFi and Bluetooth
- Quad Core
- USB Multimedia Function (Photo, Music and Video)