I have been slowly moving to  Kamui clear soft on most of my cues.  I wont change a tip if i don't need to though.  if it is on the cue, and has clearance, i leave it alone.  I moved to soft because i find i over hit too much with hard tips.   my buddy is the opposite, it under hits with a soft tip so he plays with a hard tip.  we will swap cues once in a while and the games we play tend to go downhill quickly 
 
I have yet to replace the first kamui soft installed 2 years ago.  it has hundreds of hours of play on it.   still looks new.  while definitely pricier, if one tip is lasting me multiple years, i don't mind the initial cost.    I scuff it once in  while, but that is all the maintenance it has needed.  I have had more issues with leather tips than the layered.  both have their pros and cons.    I really like the sound a kamui soft makes which is the main reason i use them. 
i was a triangle guy for quite a while.  then on my player i couldn't figure out why sometimes my cue was hitting really well, and others times not.  apparently after investigating there was a air bubble in the triangle.  it was so inconsistent to when it affected a shot i had no clue.  maybe one in 10 shots felt weird and sent CB off in a crazy direction.  when my installer removed it he showed the me the bubble in the middle.  I had heard stories, but never seen it.
i did love the older Mooris, too bad they were changed.  those were my go tos.