I am a current Vandy 3A Sig owner and a former Thiel 03A owner (years ago). There is a world of difference between the Thiel sound and the Vandy sound. I find the Vandy's to be much closer to providing natural intrumental timbres than the Thiel's (which I consider to be "HI-FI" speakers if you kinow what I mean). I found my Theil's to be fatiguing - to the point that I eventually swapped out the tweeters to try to ameliorate the high end issues. That phase has long since passed and now I am a very happy owner of the Vandy 3A Sigs. I am very satisfied with the low end from this speaker in my rather small room. I have not heard the 2Ce's so I can't tell you how much better they are on the low end. But my main point still stands - Vandy's and Theil's are very different speakers and I can't imagine you liking the Theil's if you have been happy with the Vandy's overall sound, bass issues aside.
Mark
Mark