What should I buy? Frame wheels cranks bars tyres mudguards grips pedals spokes bike

The grand dilemma is: Leader 725 -- Tokyo Fixed Gear's S2 -- or the BLB track frame ????

You will be able to find info on Leaders and BLB by searching. I haven't ridden any of them, so I can't speak from personal experience on the frames. But the first thing you should do is make a list of things you like and don't like about your current frame / bike.

Points to think about while you're riding your bike imo are:

• stiffness - how quick the power feels like it gets transferred vs your bones being shaken to bits, where do you think your balance is.
  
• steering / responsiveness - do you notice it feeling slow, what do you feel would constitute as being too twitchy.
  
• stem choice - threadless/ahead vs. threaded. If you've got a 1" threaded / quill at the moment do you notice or care about how much your bars flex? Does the lack of ease of changing bars and stems bother you?
  
  

Thinking about the above will better infom your decision on what frame you should get.

From a quick look at the frames you've chosen they seem run through the spectrum. My thoughts would be...

- Leader 725
I don't know if it's alu or steel, but it looks like a track specific stiff, probably heavy frame. Look at what people who have them on here think by searching.
**

• BLB track frame **
  Lots of people have used them, the general consensus is they're the same as the IRO's, so search for those, and see what ppl say. Out of the ones you've shortlisted I'd go for that. Threadless headset, fairly cheap, looks clean, i'd *guess *it would be a good balance between stiffness and comfort.
  **
  
• Tokyo Fixed Gear's S2**
  It looks like a classic track frame. So 1" threaded, but track geo. Personally I like the high riding position track frames give in the city. But paying for a new frame with a quill stem seems a bit silly to me. Plus if your budget goes up to £350 I'd look on here and ebay and buy a second hand Condor Pista. Much better than all of those imo.