Great for variations with images

It allows images from variations taking them authomatically, which many other plugins don’t allow or don’t work well.
It doesn’t conflict with theme, and its free features are quite good for using in a simple page. Quite complete.
The only “but” is that “out-of-stock” style is only taking into account “non-existing” variations, instead of “out-od-stock”. Out-of-stock variations still appear as selectable.
It’s possible to mimic the behaviour using following code in functions.php (if it’s useful for anybody):

function vbm_variation_is_visible( $visible, $variation_id, $product_id, $variation ) {
 if( ! $variation->is_in_stock() ) {
 return false;
 }
 return $visible;
}
add_filter( 'woocommerce_variation_is_visible', 'vbm_variation_is_visible', 10, 4 );

But then there will be no difference between “out-of-stock” variations and “unavailable” variations.