Track frame upgrade itch.. Any advice?

I've had a Fuji Track for a couple of years now, using it for the daily commute. Have upgraded the wheels to Mavic OP's with Phil hubs, then Dura-ace cranks and Siguno Zen ring - and now feeling the itch to get a new frame/fork/headset etc.

I'm not particularly knowledgeable and looking for some advice. A couple of frames have caught my eye so far; Bob Jackson Vigorelli and Light Blue Trinity 531. Any thoughts on these?

I presume frames like this would be a significant upgrade - any other frames you'd recommend looking at? I'm open to second hand but would also consider new.

One other thing - I travel to San Francisco regularly so if there are any frames available over that side of the world that stand out, I'd be interested to hear about that too.

Any advice gratefully received!

I've got a 531 Bob Jackson Vigorelli and it's great.

It depends on what you like - classic steel, modern aluminium, carbon?

It depends on whether you want steel or Alu and how much your budget it. I personally prefer steel and think something like a Tokyo fixed, Brother or BJ would be a nice upgrade from you Fuji.

If your feeling fancy why not go full custom, you have some nice components to through onto your next frame.

Thanks for the replies. I prefer steel frames, and would go up to around the £500 mark I think. The Brother's frames are nice! Although I've got something in my head about getting a cream/ivory coloured frame..

+1 for the full custom.....my custom 631 Condor (lugged, UK built) was the best thing I've ever ridden...pity it was bloody stolen!

Tokyo Fixed S2 if you want something new.

I'd say a Brothers frame, new product range coming out next year aswel I believe which may be worth considering...