As of yesterday evening, this site is now running Drupal 6 on a single Acquia codebase that also runs Seven Hills B&B (my parents' bed and breakfast site -- upgraded all the way from Drupal 4.6!) and Food Like That (my food / recipe site)
I continue to recommend Acquia for sites large and small. For smaller sites, if you've got some extra time around the holidays, the "Community" level of Acquia Network support is free until December 31st of this year. And once you sign up, you have that access for a full year. I have subscriptions for all the sites above that I've mentioned. You might have some non profit or smaller business sites that you help out with that would be a good fit.
For larger sites, you may be customizing too much to take advantage of Acquia. But, for startups just building out their Drupal implementation, having the consulting team and "backup support" of Acquia makes the Standard or Pro levels definitely worthwhile.
Anyway, end of the Acquia commercial :P I'm a fan of what those guys have done so far, but still would like to see a better install profile. This should directly lead to needing less of a Drupal developer to get somewhere fast. I used to joke about Cisco, which often gives out free / cheap hardware to non profits, that the equipment was worthless unless it had a Cisco Certified Engineer strapped to the top of it...
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