Track wheelset recommendation

I'm looking for a track wheelset at the moment, and I'm debating between v-sprint Miche wheels, and Ambrosio wheels.

I had a few questions about both wheelsets.

Firstly, the v-sprint wheels (http://www.v-sprintwheels.com/pages/track-wheels-custom.html).

• What are the Mach1 21mm rims like? I can't find an example of it online. If anybody has a picture, please link me. What tyres width can these rims support? Up to 25c or 28c?
  
• What type of Miche hubs are used at v-sprint? (Primato? Or other?)
  
• Does the wheelset come with cog, lockring, nuts, and rim tape? Can I pick which cog I'd prefer?
  
• Does the hub come fixed/fixed? If so, where do I specify that I'd prefer that over fixed/free?
  
• How do I get the lfgss forum discount (10 pounds)?
  
  

I'm also interested in the Ambrosio wheelset from kinoko cycles. (http://www.kinokocycles.com/track-wheelset-1.html)

• How do these compare to the v-sprint wheels? Better/worse/on-par?
  
• Anybody have a good or bad experience with this wheelset?
  
• Does it come with cog, lockring, nuts, and rim tape?
  
  

I have emailed v-sprint customer service about their wheelset, but thought in the mean time, I could everybody else's opinion as well.

Edit: If there's another wheelset I should consider for under 150quid, please let me know.

Thanks,
David.