They've been my favorite band since high school, and it speaks to the strength of the band that I haven't wavered on that. I regret not getting out to see the band over the past few years. While I'm sure whoever they get to replace Moore will be an accomplished musician, LeRoi brought a special flavor to the music. There was a sense of maturity about his play as well as that of drummer Carter Beauford, when compared to the playful nature of Dave Matthews (guitar/vocals), Stefan Lessard (bass), and Boyd Tinsley (violin).
I can't really explain why Moore was different from other saxophonists, or why I think he was better. It's a subjective argument, and one that you couldn't in good conscience agree with without hearing the music. Luckily, the Internet offers about fifty billion ways to listen to music. I was able to quickly find what is, for me, the most memorable LeRoi Moore tune. It's a cover of All Along the Watchtower, off of the band's Recently CD.