I have been using the `WP to Twitter` plugin for WordPress for a long time now — I much prefer it over Twitter Tools because it works faster and lighter. Not only that, but I can easily customized the tweet and automatically post “updated” tweets when I edit a post.
There has been one problem with my site and `WP to Twitter` — it posts the tweet before the database cache is done updating and because of that Twitter users often read the post before the server had a chance to flip around the linked list URL. So essentially Twitter users often think there is no link to the linked list post, instead just an endless loop. Whenever this happens I have to dump the cache, not hard, but annoying.
The biggest feature (for me) that WP Tweets Pro brings: a delay setting for the Tweets. Now all TBR tweets will be delayed by one minute, thus (hopefully) solving all my problems. This plugin also has some other cool features, and for $25 — why not.