Thanks for the info!catch can's have been making a bigger scene since the direct injection engines have hit the market. when i had my '11 Sonata, many owners, especially the turbo ones added a catch can and they would accumulate oil in it.
i never installed one on my car...drove it from new to 64K miles in 2.5 years. i would periodically check the oil level and it was always fine. so, if i had blow by, it was so minimal that it wouldnt' show on the dipstick between oil changes.
the biggest thing you have to remember to do is....dispose of the oil - CORRECTLY.
others will have their own opinion. if you feel more comfortable with one, then, by all means, add one.