By that description, I'd boil it down to only two pieces:
CAVE TROLL - This is hands down, the most impressive LOTR statue. Period.
It does honestly blow the original Balrog out of the water, due to the CT's
greater size, detail, pose, and overall realism. The Balrog loses points due
to it's lack of SIZE, lack of FULLY SPREAD WINGS, and less-than-realistic
paintjob. Cave Troll has it all.
*Side note 1 - If only there were a BIG Balrog statue with fully spread wings.....
*Side note 2 - the ONLY statue that could have been better than the Cave Troll
would have been a fully armored Battle Troll, and that was screwed up by
making it mini-me size so it lacks the size needed to be one of the "big boys"
The only other competitor would be the RWoS. It is as "iconic" a LOTR
statue as you'll ever find, and it captures the books and films perfectly.
AND both these pieces will hold their value for the long term, Cave especially,
due to the low edition size on him.
All the above is of course, my lowly and humble opinion.
JS