ProTERM, ANSITERM, or Spectrum?

["A.J." <naijireja@yahoo.com>]

Hi all,

I have recently purchased ProTERM and I absolutely love it for
text-based terminal access to a Linux box.  However, I've also seen
Spectrum and ANSITERM on the market, specifically for the Apple IIGS.
What is the difference between all three programs?  Can Spectrum and/or
ANSITERM display characters in color?

Thanks,
--A.J.