Cheers!
I had a SMP Bond for a while but I found the casing and bracelet fairly heavy for normal office wear. I then got an AT Skyfall, which is hawt but it lacks some of the "sport" look. I now have a Rolex GMT2. I really like the weight and the size, and want to make an additional to the family.
If I were looking for an Omega with same type of weight, sporty, size... would the SM300 Remake fit that criteria?

 

Speedmaster 57 Titanium if you like the aesthetic

Light, great movement, 41,5mm

 

Maybe a Speedmaster? I was dedicated to Seamasters for more than a decade. Then the Speedmaster bug bit me and I haven't looked back.

edit: @Walviskroket beat me to it.

 

These are great, but not easy to find as I have been looking.

But the OP might consider the SM300 Master Co-Axial in titanium, I can vouch for the fact it is easy to wear with anything.

 

That is a great looking piece. I would be concerned on the 41.5 that it would look gigantic on my wrist. I am nimble wristed...

 

If you really like the size of the GMT at 40mm, are worried about something larger, and want sporty, how about either the 60th Speedy or one of the newer CK releases? They're just under 40mm, sporty, and very comfortable for long wear on the wrist.

 

What about a new AT on the rubber strap? That seems like a sporty option to me.

 

Any of the new Seamaster watches are going to be significantly heavier than your old Bond SMP, so they don’t seem a realistic option. Unless you go titanium, of course. Does the watch have to be a diver and on a bracelet? Because a Speedmaster on a strap would nicely complement your GMT.

 

The Ck2998 on black strap is pretty badass...

 

The only Ti watch I've ever worn was a GS Snowflake. I know some people dislike the lack of weight but for me it was one of the most comfortable watches I've ever worn and the weight had a lot to do with it.

 

What about the 60th Seamaster 300? It's pretty slender and light if you put it on the leather strap.
Or maybe a 90s Tudor submariner?

 

Or use leather strap? It’s for office use anyway, right?

 

I w'd go with the AT on the rubber strap