Hmm. I agree about the Hobbit vs LotR soundtracks - certainly not as good. However I have to say that I can really enjoy listening to the first Hobbit soundtrack. The Desolation of Smaug one however, it not memorable for the most part. I think the problem arose because Howard Shore didn't orchestrate or conduct the DoS soundtrack and I don't think he will for the BotFA either. Instead he writes all the themes but someone else orchestrates them, which I think loses a lot of Howard's wonderful score in overuse of tremolo strings. This was different from LotR and AUJ, where he composed, orchestrated and conducted all of it.
It's weird that I find the AUJ soundtrack better than DoS as I also much prefer the AUJ film to DoS as well. Funny how that works. I definitely notice the lack of Shore's own orchestration in DoS and what I've heard of BotFa so far...
I believe the reason for him not orchestrating and conducting DoS and BotFA are that PJ wanted to use the NZ Philarmonic and Shore's health /age wouldn't really allow for him to travel. AUJ on the other hand was done with the London Philarmonic. And as for LotR, that was 10 years ago and so travel wasn't as big a deal for Shore at the time.
I love listening through the LotR scores at any time of the day. I've taken to listening a lot to The Return of the King "Complete Recordings" which is just fantastic. "The Lighting of the Beacons" and "The Eagles" are two of the standout tracks on that soundtrack
I've got to say that I think LotR is the finest film score of all time - maybe not got the one most memorable theme from a film of all time, but as a full work, it's unbeatable IMO! I view Howard Shore as something of a musical genius! His work on each of the races in Middle Earth is just astounding and the manner in which he devised all his themes even more so!!!