We purchased SQL Toolbelt a few months back, and I have found it very useful. Specifically SQL Multi Script, SQL Compare, and SQL Data Compare. We have yet to implement SQL Backup, but that will be coming very soon. We were very impressed with its performance and the price as compared with Quest LiteSpeed. SQL Dependency Tracker has been somewhat useful, and SQL Prompt and SQL Refactor are nice programs as well although SQL Prompt can get a little annoying at times and is slow on large SQL scripts and across VPN.
Another collection of DBA tools I recently purchased is the Idera SQL admin toolset. I got it for the promotional price of $195 which is a great value. It's back to the regular price of $495 now, but you still might think it's worth it.
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