BlogSieve, yet another RSS re-mixer:
Splice (up to 5 feeds)
I really think at the moment that no-one can out do FeedDigest (bonus re-syndicating as java, html, etc…also set up as an account of all your re-mixes).
Only thing is that filtering out a search term requires a positive term…from a comment on one of my posts by developer of FeedDigest:
“Feed Digest supports negative terms. Just put a minus sign before the particular word, and entries with that word are stripped out. Of course, there must be at least one positive/other term. It’s like Google.”
Added to the list.