A higher pressure pump doesnt actually have the ability to flow anymore oil, all it will do is at times when the standard pump was bleeding flow off because pressure is sufficient, it will push that through the engine instead of back into the sump to increase pressure further.

Ie at the times (like at idle) when the pump doesnt flow enough to maintain pressure it will make no difference, the only time it will flow more oil is at the times that you have enough flow anyway.

Ultimately different people will have different opinions, but personally I think that the standard pressure is plenty and that more doesnt benefit you but makes it more likely that seals will fail etc.

Might be worth posting a "is a high pressure oil pump a good idea" thread and see if you can get a few more people's opinions though.