No right or wrong. Nor better or worse
It's what suits you
I prefer fishtail bits.
I don't mind P-lips
I have quite a few pipes with rounded orific bits
Personally I find the Charatan double comfort bits downright ugly
I use rubber softie bits all the time. But a lot of people can't stand them.
There are people who actively dislike P-lips. Others love them
A lot love the softer stems on MM cobs. I've never smoked a cob, so I can't comment.
Then there are those who prefer vulcanite over acrylic. Or vice-versa
Quite a few are very particular over how thin or wide the bite zone is and will not tolerate a thick bit/button.
What I am saying, in a very long-winded way, is that this IS a personal preference. What works for me, or indeed the majority, may not work for you.
You won't know until you try