I have two custom chainrings by Matthias at experimental prototype. They area both the hard to get 102BCD middle rings....one is a very lightweight ally one in 32 tooth, and the other an exceptionally bling 42 tooth in Titanium ;0)
I'm after £30 posted for the ally 32 tooth and £50 posted for the Ti 42 tooth.....this is less than I paid for them.
I was going to mod my cranks, Jeff Jones style, but have decided to stay stock.
42 tooth Ti
These are very high quality, and normally, there is a long wait to get them.....jump the queue!