Have just seen Macbeth at Chichester, 10/10 for me. Will watch the McKellen on DVD to compare. Have seen a few Macbeths, and this tops the lot for me.
My least favourite? Rufus Sewell a few years back (what should I have expected, I guess). I quite liked Pennington's with the ESC a few years ago, and Roger Allam in 96 with the RSC at Stratford was probably my favourite before this week.
Probably the best Macbeth I have seen too, but not a strong field. I did not see the McKellen one.