I would agree. Lowering the action helps bring out growl and tone, and this is because you are lowering the tension on the strings.
I used to go for heavy guage strings because I thought it was more "bass". After trying a set of TI flats I really started to develop as a bassist because they were just so easy to play and had that right amount of tension.
No kidding. I suppose it's like starting out on a bad instrument; hard to play, not much advancement. My Ibanez gsr200 is most likely mediocre, but damn it sounds and plays great with the low tension TI's, like a whole new bass.
Im finding that as well.
Got a set of Fender 7150 light mediums by mistake (supposed to be medium) so the E is only 100. it felt good and didnt sound as boomy up the neck as my old 105. more of an even tone across all strings.
was a bit worried about loosing some bass but it never happened, just sounded a bit clearer.