My advise:
1. Ask your self first..re u hard hitter or soft hitter..then select correct shaft.
2. Tgk weight of driver head + shaft...re u feel berat or ringan when start backswing?
3. Try swing beberapa kali..then feel which one yang meletihkan? kalau letih mean that driver is not suit to you.
4. Go to driving range and test physically.
5. For higher handicapper..try to get driver yang boleh bagi ball straight rather than distance. Klu jauh tapi OB pun tak guna.
6. Lastly....pilih salah satu...swing mengikut spesifikasi driver atau driver mengikut cara kita swing. Saya masih guna swing ikut driver punya spec coz tak mampu nak custom or beli new driver lagi. Pakai apa yang ada jerr...then try to match it with our swing.