Originally Posted by mcnuggets

I'm looking to build up a bike fairly soon starting from an IRO Mark V frameset. This is the first time I've done this and I want to ask from other people who have built their own bikes what parts are worth spending the extra money on and what parts will see only marginal gains the more expensive they are? I'm thinking about concentrating my budget on wheels, crankset and a saddle.

Wheels:
Paul Components high flange 32h hub
Velocity Deep V rms
DT Swiss straight gauge spokes

Crankset:
SRAM Omnium GXP

Saddle:
Considering a Brooks saddle. I really want to make my bike as comfortable as possible so I can ride longer.

What about stems, seatposts, handlebars, brakes and levers? Worth spending the extra money on?

Thanks for the help.