Glad to hear it!
It’s also interesting to know what different people imagine for the characters’ voices. Yours is much closer to what I have in mind than the Richard Horvitz suggestion most people make. (Though Horvitz himself has told me he would love to play the character, so no complaints there!)
I always imagine a smooth, dignified tone with only the subtlest hint of insanity when he’s speaking normally. But when he loses his temper and freaks out, it’s much closer to the Dr. Insano screaming madman style of voice.