If you have the money, buy a tatty one and have it refurbished, new panel, zero timed engines and you will have more than enough change left over from the cost of a new twin to pay for the fuel
The problem with this approach is that when you come to sell it, it will be worth......not much more than a tatty one. The market in old twins is brutal in this way. You have to be sure you will amortise the money over a long ownership period.
The best aircraft to buy is a twin where the
previous owner has done what Fuji suggests!