In my experience the Rotherham branch staff are terrible apart from one lad in the road section. Chesterfield and Sheffield are slightly better but not great. If I can avoid using them I do.
Just been in the Chesterfield branch and they were happy to spend half an hour sorting me out with replacements for all the bits ground away by the Crickhowell Merida on Sunday. Picked up an new XT cassette (8spd) for £12.
I guess it depends who you speak to and how busy they are.