Asian investors often prefer to invest in US-domiciled funds due to the favorable regulatory environment and established legal framework. Delaware is a popular choice for fund domicile due to its well-developed corporate laws and investor protections. Given your investor demographic, a US domicile, particularly Delaware, would likely be the most favorable regulatory regime. This choice balances the interests of both US and Southeast Asian investors, providing a familiar and trusted legal environment. Having said that, the manager and the investors should consider the tax implications of any fund structure.