Hi guys, I'm currently exploring downlight for my new unit. Looking to get about 28x downlights for the entire house (around 1.1 sqf).

Want to ask what is the difference of;
- 4 inch
- 6 inch

I'm currently looking at PHILIPS 59466 MESON Round 17W 6 Inches LED: https://www.lazada.com.my//products/i978056...fn&urlFlag=true

Price is RM29.90. Is this an ok pricing for a downlight? I always hear Philips is the most reliable one. Highly appreciate on your thoughts.

Cheers!