I would like to add to the nice summary by Robert and Michael two
comments which I reckon relevant.

1. The 5FS MC implementations are currently plagued by serious
limitations due to the apparent inability of both Pythia and HERWIG
to correctly back evolve the b's. As the result the distributions for
the spectator b's are not trustable.

2. 4FS MC implementation at NLO are going to be available very soon,
(certainly before summer) so that is something that should be taken into
account for the next round..

3. All current 4FS NLO calculations (Higgs, Z, single top)
don't display evidence for  the need of large log resummation.


Cheers

Fabio