It looks like KP 51r1 is more battle tested than KP 52, although it looks like KP 52 has some very nice enhancements.

What's the prevailing opinion? And, what's the way to install 51r1 from HAM? Or apt-get? Is the only way to download the package and install manually via dpkg?

I just flashed my N900 and was thinking of installing CSSU Thumb with KP 51r1 to avoid potential headaches from KP 52.