The first example has been tested on larger searches, up to about 5500 rows and does well. The execution plan for that stored procedure shows a clustered index seek for the table that is used with the code in example one of my article.
I wouldn't use any code that takes too long to deliver results. If it takes too long, I find another way. There is more than one way to do everything described in this article.
Robert W. Marda
Billing and OSS Specialist - SQL Programmer