In reply to ice.solo:
Economist on iPad (includes audio so it can be read out to me while cooking) is great. Zinio mags are pretty good too.
However, there is something quite nice about magazines on the coffee table - show off value. My copy of Cross Country mag looks better in the flesh than on the iPad unfortunately, but nothing beats having all my books and magazines with me at all times.
Possibly relevant to virtual magazines is the version of tablet being used. I hated reading on my original iPad, with its low resolution screen. Now that they have gone hi-res, all is much better.