Frequency response of 0 ohm resistor on 50-ohm line?

Hi:

Application Note AN098 (Layout Review Techniques for Low Power RF Designs) recommends using a 0-ohm resistors in series for un-mounted components in a pi filter for antenna matching.

Some 0-ohm resistors have a very poor frequency response. My design operates on the 433 MHz UHF band. What resistor/jumper technology would be the best for this type of jumper? I'm considering solid copper strips and metal based sensing resistors (at around 1-5 miliohm).

Thanks.