747-400同777哪個好d

Depence what do you mean by good...

Capacity:
B747-400 450seats vs B777-300 350seats...
B747-400 win...

Range:
B747-400 14200km vs B777-300 15000km
B777 win...

Efficiency:
B777-300 win... Newer technology... Better fuel efficiency...

是777好d,因為飛快d。

Well passenger side, 777, it has many series such as 777-200, 777-200ER, 777-200LR, 777-300, 777-300ER, no matter for short haul to long haul flights, making frequent flights from point A to B.
Freighter side, 747-400

You see the trend for all airlines change to use TWO engines passenger aircrafts.
Cathay Pacific, Singapore Airlines also placed many 777-300ER orders. Well, I love
the experience that I flew Emirates 777-300ER from Hong Kong via Bangkok to Dubai...

777
Fuel savings, lower operating costs
The airplane is larger than all other twinjet or trijet airplanes and smaller than the 747. It brings the twin-engine economic advantage to medium- and long-range markets.
The 777 interior offers operators unsurpassed configuration flexibility. A typical 777 configuration change is expected to take as little as 72 hours, while it can take two to three weeks on other airplanes.
United Airlines, All Nippon Airways, British Airways, Japan Airlines and Cathay Pacific Airways were among a number of carriers with whom Boeing held intensive discussions, including many team sessions, to define and develop the new airplane's configuration.

First 777-200 was delivered to United Airlines in May 1995.
First 777-200IGW/ER was delivered to British Airways in February 1997.
First 777-300 was delivered to Cathay Pacific in May 1998
First 777-300ER was delivered to Air France in March 2004
First 777-200LR to PIA Pakistan International Airlines on 25 Feb 2006

Just a little bit figures from two famous airlines using 777s that people always talk about:-

Cathay Pacific currently made commitments for 18 Boeing 777-300ER aircraft with purchase rights for 20 more(news as of June06). The first Boeing 777-300ER aircraft is scheduled to enter service in September 2007. Additional 2 which are placed in Jun will be delivered in January and September 2008
Current 777 status
12 777-300
5 777-200
Current 747-400 status
17 747-400
4 747-400 Premium

Singapore Airlines currently has 19 firm orders of 777-300ER with option of 13 more(as of today 19Oct06 from Singapore Airlines).
Current 777 status:-
12 777-300, 31 777-200, 15 777-200ER,
Current 747-400 status
27 747-400 (Includes 2 B747-400s that have been withdrawn from the operating fleet)

Boeing 747-400 is better than Boeing 777

Because Boeing 747-400's lift is better then 777