.Not too many operators of the -900 but Korean seems to like them.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/130275500@N02">G B_NZ</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/130275500@N02/28166075010/">KoreanAir 737-900 HL8248 at ICN</a>