what is more important ?

hiya Folks,

do interconnects and speaker cable make any significant difference?

The reason I am asking is because whenever I ask staff at Hifi shops they are always trying to flog me expensive cabling.


Cheers again

Yes but they are close to last on the list.  

Want to guess what the most important piece of equipment is in a car? The nut behind the wheel.

Same here. If you know what you're doing you can build a budget system that sounds just wonderful. But if you don't, then no components under the sun will ever get you there.

Speakers. The difference between cheap speakers and good ones is huge. The difference between a cheap anything else and a good one not so much except maybe cartridge. The speakers will determine the sound of your system more than anything else. With good ones you will be able to appreciate upgrades in other components. 
Georgehifi, humidity does not effect the efficiency of ESLs unless you have adjustable bias and are forced to turn it down. Most of us adjust the bias to the highest point satisfactory for all conditions as bouncing your bias around screws up settings with other devices like subwoofers.