I should be careful what I say here... Tak's can support PEC, but not out of the box. i.e. using the supplied Tak Temma I or II software. You can of course replace the goto engine with something more sophisticated such as the FS2 -
http://www.astro-electronic.de/. FS2 supports a few Tak mounts. I've also heard of people adapting their Tak mounts to use SkyWalker -
http://www.astrometric.com/index.html, but its a considerably larger migration. (Don't believe SkyWalker has PEC - never researched it).