Kung budget friendly ang gusto mo TS, go sa X series. Pero kung maliit lang naman ang difference, mag-F kana TS. Ako din kakabili ko lang ng Poco F4, so far so good.
Performance - Flagship quality
Camera - Mid-range quality
Battery - Mid-rang to Flagship quality
Additional: Yung GT series naman, according sa na-research ko eh, best for gaming. Kaso halos ang problem is overheating, kase nga sobrang solid ng chipset niya. Medyo mapapagastos ka pa sa accessories tulad ng cooler.
X series - Budget Wise
F series - Daily Drive (browse, camera, gaming)
GT series - Gaming