Buy a daytona 116520 in Hongkong?

[horng]

Hi Bro, I am considering to buy a black dial Daytona 116520 V series. I have checked the retail price in SG which is SGD14,500 (90K HKD). But ADs sell it at premium price at SGD17k (HKD105,400). I am going to HKG this weekend and may want to buy it in HKG if price is right.

I have some questions.
1. How much the AD price in HK?
2. Which AD in HK can be trusted? Any contact? I heard stories that people bought fake rolex in AD shops in HK.
3. I am confused of the series. V or Z is better? Is the bracelet different?

Many thanks....