Thanks Gregor for taking some of your time to write this !
http://gregorsuttie.com/2012/06/10/book-review-practical-performance-improving-the-efficiency-of-net-code/
Really glad you liked it, and since English is not my native language, nothing could please me more to know you found it well written 
But most of the merit there is from my wonderful editor Marianne Crowder !
About JP Gouigoux
Jean-Philippe Gouigoux is a French software architect & MVP Connected Systems Developer. He regularly talks at University of South Brittany and Agile Tour.
Your very welcome, thanks for writing such a great book.