We're using this plugin now since a few days, and our customers are happy with the shop search. The time before we've got a lot of messages because they couldn't find their products through the search.
This plugin is easy to setup, no changes in the template files are needed, and the support is fantastic. All problems were solved really quick through the direct communication with skype.
I highly recommed this module as it is also really cheap for the given functions.
A vendor responded to this review
Thank you for your kind review. We are committed to make it easy to install, easy to use and easy to integrate with support for all third party theme & plugins. We are continuously testing and improving it for the same.
Once again thank you for your trust & support. :)