I use StyleCop, which includes a readability rule (http://stylecop.soyuz5.com/SA1103.html) stating that all clauses in a linq query must appear on the same line, or on a new line.
I run into problems when I use a grouping in query syntax.
var result =
(from c in collection
where c.SomeProperty == true
group c by c.SomeOtherProperty
into grp select grp.OrderByDescending(c => c.AnotherProperty).First()).ToList();
I cannot find a way to make R# put the "into" and "select" clauses on a seperate line.