My all-time favourite is ab's 67 ac. Once you get it, there is absolutely no doubt it's right. I also liked GK's 9 ac Brewing, aristo's 41 ac Aquarium (but I wouldn't have got it without some of the letters) , Les's 8dn Cuckoo and bob's mum's 89 ac Basmati. Some were completely beyond me, have never had so much help as with 5ac, though now I do see it I think it's extremely clever. Thank you for your patience, you know who you are!
Thanks everyone, esp Les and ab