Custom Chainrings (151 BCD)

Hi all,

It seems I'm now the proud owner of a nice old Campangolo Pista fluted crankset (BCD 151). But no chainring.

Ok, so not the most common size in the world but it looks like I have a few options:

• http://www.campoldy.com has a 47 and 49 for £77. But maybe a bit small if I genuinely want to do a little velodrome work?
  
• http://cycleunderground.com.au/chainringdesigns.htm (model "three") will make one from $AUD58 for 3mm plate and $AUD77 for 4mm plate.
  
• http://www.highpath.co.uk/cycles/eggs/02.html ("re-enforced" model) will make one from £71. +£15 to polish it.
  
  

I wonder if anybody has words of wisdom regarding these options?

Or any other suggestions?

thanks!

Joachim