I've never liked this piece. However, after discovering how much my impressions and feelings toward symphonies by Beethoven and R.Schumann could change with period instrument performances, I'm hopeful that I might have the same experience with this symphony. It is one of the few pieces I've ever heard that really sounds "ahead of its time", and it's seen as this fantastic landmark in orchestral music. I'm sure that it is. It's also quite popular. I may never like it, but then again, I'm thinking now that I've never heard it done properly, as in, using the instruments and scale for which Berlioz was composing.
I've discovered at the least two prominent recordings of this work that are supposedly "HIP". I was tempted to just get the Gardiner version, as the Orchestre Revolutionnaire et Romantique is probably my favourite orchestra in the world (and Gardiner my favourite conductor). But Roger Norrington also seems to have one out there, and the best recording ever made of my favourite piece of music was done by him (W.A.Mozart's Don Giovanni). I'm going to be a little more careful this time, and hope to hear a few opinions on so-called HIP renditions of Berlioz's Symphonie fantastique before rushing out and buying one.