Oil breather

Hi chaps,
Looking into upgrading my breather system so any info/pics/advice would be great!
Just running a standard filler with a cheap gauze at the mo but went on a long run the other week an it dribbled some oil out of it onto the tinwear,
Have been told that a simple pipe off the filler to top of carb filter would sort it but then been told by someone else it's not a great idea as you don't really want oil sludge going into the carb?
What's everyone running on their bigger engines?
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Cheers wilf