The Laid to Rest films are the only slasher flicks that perfectly blended practical FX and CGI for me.
I don't care if it saves time, money etc. it rarely looks right to me when they use CGI in kill scenes.
The F13th reboot for example. The ax blade sticking out of Lawrence's chest was so obviously CGI it took me of the movie.
Other than that it wasn't really noticeable in the reboot.