Dr A. N. Walker wrote:

I don't. I enter them via ChessBase with Fritz running.
In positional terms, I trust my own judgement more than Fritz,
so I'm really using the computer only for blunder-checking. If
Fritz doesn't see anything before I move on, tough. [Of course,
it is doing this not only for the moves actually played, but also
for my own annotations, plus any off-the-wall ideas I feel like
investigating, so it is not expected to spot things "early".]
So it usually gets a few seconds for "routine" moves, much longer
for positions that seem "interesting" [either directly to me, or
because Fritz seems to be finding something].


I do something very similar, and it in general works pretty well for me.

However, I use the add kibitzer command and have Rybka running as well
as Fritz. Though I used to run Toga as my second engine until I broke
down and purchased Rybka as well. (For me, I didn't want to use a
Chessbase product for this purpose. But I have nothing but prejudice
for that decision, it may make as much or more sense to use something
like junior, shredder or zap! for this).

This adds one more interest point. When the two engines diverge
dramatically. Or I disagree, or whatever.

Many times these extra points of understanding, and extra viewpoints
will more than make up in extra knowledge than in any noise that is created.

The whole Kibitzer feature is one of my favorite features of the
Chessbase family.