Chris,
> I wondered if anyone here is familiar with this program or has another they could recommend. <
Fuzzmeasure is excellent. I don't have a Mac so I don't actually have the program. But I've seen many screen shots, and the program's author (another Chris

) has chimed in many times in my own Acoustics forum and other forums. I've also read only rave reviews from users, many of whom I know and are my customers. So splurge! You won't be sorry.
--Ethan