✔ 最佳答案
Like your case is only few percent differ and is not that serious. Most bank count on the pricing of the transaction (S&P), and still have 5 percent space.
Bank of East Asia is the highest now, and HSBC and Hang Seng is the worst. Also you can try Fortis Bank.
Every bank using different valuation house, then of course the valuation report is different from each other. Valuation house bascially counts on the last five transactions of the building and get the latest valuations.