small-luxury-world[Patek]
8725
"the piece is too heavy" No, it isn´t ...
considered as a "real" sports watch.
The weight with bracelet is: 205 grammes
What I like with jumper or T-shirt, doesn´t work for me in the office with suit. It all depends on your own habits/lifestyle/... 
For example:

(121 g - steel with rubber)
(205 g - platinum with rubber)
Both felt good on my wrist and the first one was my daily beater for a long time. In these days I thought the same watch in steel is too heavy for me.

(205g; 170g; 160g)
The Alarm GMT wears perfect on my wrist. Only because of weight? No, I don´t think so. Mix between weight, shape, balance point, ...
Regarding your second question. Yes it is easy to change if you have the fitting tools.
Blancpain offers some nice solutions if one is willing to pay the "premium".
Gaz, what is the weight of your "Trilogy"? How does it feel for you?
Oliver
Depends what you like
By: mcklof : January 12th, 2010-13:10
I would think that you'd have to spend some time with both on your wrist. It all comes down to personal preference. If the standard FF on the bracelet didn't immediately appeal to you, well, I'm not one to risk throwing down that much cash hoping that the...
STANDARD FF
By: grigo : January 12th, 2010-13:11
I would suggest the standard FF as opposed to the Chrono. I have the Chrono and I love it, but in the back of my mind I always wonder why I didn't get the standard FF the dial of which in its simplicity is just beautiful. Regards, George
insight
By: infntryco : January 12th, 2010-13:38
I havent done my research, so far only based on looks, and so I did not know the chrono was not inhouse. I like the busier dial of a chronograph, but the simplicity of the non chrono is both appealing and a turn off for me, it looks nice and clean but it ...
Well, George
By: amanico : January 12th, 2010-13:49
Since you were deceived with the Rolex GMT, I would be tempted to tell you to go on the FF Chrono. BUT, personally, I would go on the simpler FF. For its cleaner look. For its superb movement, which is derivated from the magnificient 13 RO. For its sapphi...
chrono
By: infntryco : January 12th, 2010-15:47
I think I am going to check out the Chronograph. I am crossed between the two but I think I am leaning towards the Chrono I like the busier dial I might have to save heritage and simplicity for later.
Chrono was my choice
By: tcollins : January 12th, 2010-19:31
I faced the same dilemma that you are now dealing with two years ago. Since I didn't already have a chrono in my collection I went with the FF Chrono. Love the watch, it is one of my "regulars" and I love playing with the chrono function. If I had went wi...
I also agree....
By: MiniCooper : January 13th, 2010-11:41
with Nicolas, Magnus & Oliver.... I used to own the chrono....but I traded for the simple (black) version.... I think that the simple version has a cleaner look while the chrono was, in the long run, too busy... The SS version has a classic look while the...
both
By: infntryco : January 14th, 2010-00:20
I will probably end up getting both but first the chrono, then I will get the normal FF when I feel ready. I have seen the air command but the dial is a bit too busy, I think the FF chrono is perfect. and I can only go simpler from their.