I steer clear of IDEs with feature sets that only end up slowing down development time because of the system footprint they have. When I spotted the drupal6complete plugin for Vim I feared it might slow down Vim. I gave it a few tests and I've found a negligible footprint with the drupal6complete plugin added. Whenever developing in Drupal I usually have a browser window open with api.drupal.org open but with drupal6complete, it may replace up to 90% of my visits to api.drupal.org. I'm looking forward to seeing if it helps speed up my development in the next few weeks. If I like it I may take the time to set a plugin up for Drupal 7.
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