The following have struck me as interesting in their various ways. Some, which I shall not bother to mention, seem depressingly similar to the angry booing from the stalls. I may update this... (Here, meanwhile, is a link to my review.)
Michael White (Telegraph)
Classical Iconoclast
Simon Thomas (whatsonstage.com)
David Nice (The Arts Desk)
Barry Millington (Evening Standard)
Edward Seckerson (Independent)
Mark Ronan's Theatre Reviews
Peter Reed (Classical Source)
Mark Valencia (also Classical Source)
George's Musings
Fiona Maddocks (Observer)
Andrew Clark (Financial Times)