[Hotte]

Just to add one thing:

You can boooost detail sharpness by chaining more unsharp masks with lower sharpness settings together. Performance effects are almost irrelevant. It´s so fast.

s=100 w=4 like in Step 1 above gives me a well visible moderate detail sharpness amplification (in connection with dehalo_alpha and MDegrain2). If I go beyond 100 (up to the limit of 127) I am getting small whitish spots ("snow") instead of more sharpness if I zoom in to see what happens. Results will be a lot better and even sharper if I chain unsharp masks together. But be careful to choose low sharpness and width settings otherwise you either get something to shave your beard or the chain collapses to strange results. I found that going lower than s=30 or higher than s=70 will not behave like expected if masks are being chained together. Outside these boundaries the behaviour is not linear anymore. So you need to experiment with the parameters s and w to squeeze out the very best sharpness for your individual full-hd footage.

Exchanging Step 1 with the following lines gives me really excellent and well balanced detail sharpness, no halos, very few artefacts and calm grain (if MDregrain2 or 3 applied):

s=30
w=1
i=last.binomialBlur(varY=0.5, varC=0, Y=3, U=2, V=2, useMMX=true)
j=subtract(i,last).levels(0+s,1,255-s,0,255)
w=w*(128/s)
k=j.levels(127-w,1,128+w,127-w,128+w)
subtract(last,k)
s=30
w=1
i=last.binomialBlur(varY=0.5, varC=0, Y=3, U=2, V=2, useMMX=true)
j=subtract(i,last).levels(0+s,1,255-s,0,255)
w=w*(128/s)
k=j.levels(127-w,1,128+w,127-w,128+w)
subtract(last,k)

In special situations a third mask with s=30 and w=1 can add an extra kick to footage whose sharpness was underdeveloped right from the start.

See the detail views taken out of a 1920x1080 clip in the attachments. s=100 w=4 (Step 1), 2 times s=30 w=1 (chained), Edius NLE internal sharpener set to 28 and original compared.