http://www.mensflair.com/style-advice/a-tale-of-two-shoulders.php
I also like the look of the Ede catalogue. It has a sharpness about it.
I do not remember anybody I knew worrying about shoulders in the late 60s Squire/Ivy shop days.
Edes are doing their MTM sale at the moment. RTW usually offers a second trousers and (often) a waistcoat. Less choice of fabric though.
I bought most of my suits from Ede & Ravencroft (Chancery Lane which has a bigger range) when I worked in the City. The second pair of trousers clinched the deal. Their fantastic Cheaney shoes, made to Edward Green standards, were THE shoe bargain for those in the know in the 90s. I also recommend their coats, especially the covert coats which are as good as Cordings and far superior to the thin tat in the mass market Jermyn Street stores. Sadly, their shirts did not stand up well to regular laundering and I returned to Hilditch & Key.