Summary – if your not giving your Pike's a beasting and hence haven't noticed that they are a bit rubbish when things get "interesting" I wouldn't bother with PUSH.
If you have noticed your Pike's are a bit rubbish then consider going for PUSH or upgrading to a better fork… personally I would go for Lyrics if I could afford to change… but I could not so the PUSH upgrade to the Pike's I already had was the best option to improve the performance – especially since I had blown the damper beyond what I could repair and hence needed to get the forks seen to profesionally anyway.