I enjoyed the LOTR films for sure and, honestly, I'm not quite certain how much better they could have been given the depth of the books.
The Hobbit was obviously drawn out for maximum $, but I still like spending another 10, or whatever, hours in Middle Earth. It really didn't bother me.
The Silmarillion was read so long ago by me that I really don't remember much of anything. I do remember, however, reading it and feeling it was more an encyclopedia than a compelling novel but I was pretty young so take that with a grain of salt.
Looking forward to all things Middle Earth, again.