Alternative to NextGen gallery-slideshow plugin

I’ve been using Nextgen for a while, but I’m tired of how it doesn’t center images inside the slideshow area if images are of different width. Display a wider-than-taller image first, then a taller-than-wider image next, and the latter snaps to the left of the display. I much prefer the slideshow that comes with the wordpress.org blogs. I manage one of those, and the slide show works perfectly. Any suggestions on alternatives for an independently hosted WP blog would be great.