Mmmm ....
.... To paraphrase the notation printed on the US banknotes ...
....... " in Pratts we trust "..... brilliant engines and I don't think you will find many that will badmouth them.
Turbomeca VERRRY expensive to overhaul ..... and I have heard (??) the Arrius can be problematic.
However I don't have any experience with the EC135 and all my Pratt time is Medium Bell (but thousands of hours) so I am a bit biased toward P&W
.