[sdiy] Analogue switches

[Tom Wiltshire]

Hi all,

I've been reading up on Marc Bareille's Extrapole DG Xpander filter  
project. I was checking availability of the DG408 analogue switch  
chip and found a wide variety of manufacturers and price:

Analog Devices, ADG408BNZ, £3.67

Vishay Siliconix, DG408DJ-E3, £2.54

Intersil, DG408DJZ, £0.93

Would anyone care to speculate on the disparity in price and whether  
it represents any disparity in quality? Does anyone have any  
experience with any of these chips?

(Or put another way, is there any reason not to buy the cheap  
Intersil one?!)

Thanks,
Tom