I have no preference, but buying balls from places like Edwin Watts or Golfsmith, I've never seen anything other than 1-2-3-4's in the boxes anyway.

One time while waiting in line to check out at Golfsmith, I noticed some Titleists in a bucket by the cash register. They were apparently made for the Asian market and had double numbers on them like 22, 33, 44, 55, etc. I bought a couple 99's just for the hell of it.

Number 1 gets lost really fast

Number 2 doesn't hit as good as normal

Numbers 3 & 4 play great

I buy a dz balls I only get 1/2 dz good ones.

I have no preference.  I mark my ball so the number to me makes no difference.

I did 9s for a while then switched to regular high #s.  I was playing in a tournament a few years ago and hit a shot in the trees.  Went over to look for it and my playing partner found a red Titleist 8 which is what I was playing.  Go over to look for it and it wasnt mine.  10 yards over the guy finds another red 8, once again it wasnt mine.  Finally found mine in the same area.  Ever since we found 3 red 8s in a small area I went back to low numbers :)

I like the high numbers for the same reason others stated not many people use them.

I'd rather have the low numbers - I don't want any high numbers near me, on me, on my score card, or on my golf ball!!!

Jason