I'm not certain, but I think Nordost's have rather high capacitance figures.
Keeping IC's short and UN-shielded (and untwisted, like Kimber's, etc) are two ways to make sure you have, all other things equal, low capacitance. If you have significant RF, you can use a $25.00 'Power Wrap' or 'All Clears' to keep it under control and tune it out. They really work - and allows you to use relatively cheap, unshielded cable without RFI penalty.