I felt that my first reply was a bit harsh so I've come back to add...............
I am a fishing guide and I participate on a fly fishing forum. Often there are posts where a particular fly reel that sells for say 5 - 700 dollars gets called out and a comparison to lesser priced reels is highlighted. In the end it comes down to are you willing to throw down the bucks to own what you want or not.
I consider a watch like the Carrera in question a reasonable buy at 1555.00 but would not pay AD price for one. I admire the Rolex watches but they are not in my pay grade. That doesn't affect my admiration of them and I would never compare them to other watches. This is a hobby that requires that you be willing to commit money if you want something nice. I have 2 Tah Heuer watches and both are very well made pieces. The Carrera Calibre 5 with black dial will be the last watch I buy. When that happens I'll feel that I have a watch for any occasion and they will all be quality pieces of work.
Oh, and comparing the Carrera to a Seiko is way off the mark, you need to go see and try on a Carrera I believe. You may be the type person who will be happy with the Seiko, I don't know you. However I will hazard a guess that even if you buy the Seiko you will always wish it were a Tag Heuer Carrera.