I asked on my wish list at Christmas for Waterstones vouchers with the thought of more reference, but can see I have M&S. I will be pants and socks rich but reference poor.
The Chambers gives synonyms ranked by number of letters which can be vaery helpful, I am usually way too slow on AB unless I have done the puzzle and even then my typing speed leaves me way behind.The helpful thing for me is the parsing of a clue although some of the paring once explained is obvious but I still am amazed how it was reached in the first place.