In the harder to grasp subjects such as property & trusts, I would always start with a nutshell. (although NEVER admit to it in front of your lecturers!)
Craic & de Burca was very good for EU - its a huge housbrick of a book, but its all I needed for the entire subject. If your getting bogged down with it, have a look at the Butterworths EU book (its got a bright orange cover) as its great for getting a good feel for it before you delve further for the mark-grabbing details. You can easily get a low 2:1 just using Butterworths, but Craic & de Burca got me my 1:1.
Herring was good for criminal, and I used my nutshell to death to initially familiarise myself with things. Also Criminal Law (Elliot & Quinn) which is an A-Level textbook but you would never believe it, its great. (although again, don't mention it to tutors or use for assignments - my tutor advised me to use it, but don't admit to it as its only an A-Level text)
Property and Trusts - use Land Law (MacKenzie & Phillips) as it is so simple to understand - apparantly it is very borderline between A-Level and degree level, but has the appropriate content for degree so it gets recommended.
I loved Trusts & Equity (Edwards & Stockwell) as its written in the same style and layout as Law of Tort (Cooke) and Law of Contract (Phillips) all of which I would highly recommend for ease of use, understanding and relevance of content. I wouldn't bother with casebooks for EU or Tort or Criminal (I just used Westlaw or something if enough information wasn't in the textbook, which was rare) but I found my contract casebook very useful. (Contract Law, Poole)
I also used the Butterworths Legal Research Guide a lot when doing assignments or looking for something unusual or random - its a great reference to have at your disposal.
My main tip regarding materials would be not to be afraid of using `low brow` materials - do a search on google, use your nutshells, look at an A-Level text - as long as you go deeper and pad it out with the relevent in-depth details and analysis, its a great place to start and promotes clear understanding of the material you are covering.
Oh and make sure your book is up=to-date - a friend of mine though they could save a bit of cash buying secondhand books, then discovered the hard way that presenting inaccurate law does not get you any marks!