Truly, I think we could discuss this to death - in fact, it already has been in the past.
Interesting point bringing up Julia Murney, another one of my favorite performers (note: my avatar gives away my favorite male performer...) who seems to either be ADORED for her voice or DESPISED, which is seemingly the exact situation for Raul.
Personally, as I said above, it could be fought about and fought about until the cows (and goats, hehehe) come home, and we would get nowhere.
They're both acquired tastes. I like Ernest Hemingway as an author, my mother does not. I love Raul Esparza and Julia Murney's singing voices, you may not. I do not think it says anything against you or the performer's talent level themselves... its just personal opinions.
What we think isnt exactly going to change the fact that they're succesful leading actors on Broadway and well, we, erm... well, most of us here, aren't...
"The nice thing about the rain is that it always stops... eventually."
- Eeyore