Awesome Addon Rated 5 out of 5 stars

This addon has really very useful and unique features.
Unfortunately the interface is one of the worst I have ever seen.
The interface needs to be recreated from scratch, then it can be a true 5 stars addon!

//EDIT
Thanks for your fast reply.
Yes the scrollbars are really annoying.
I think I can get used to the HTML Based option dialogs, but the preferences at general are at least in my opinion kinda confusing.
Maybe I am the only one that has this problem =)

This review is for a previous version of the add-on (2.25.1-signed). 

LATEST UPDATE:
I made option panels bigger in the new version (https://addons.mozilla.org/en-US/firefox/addon/fastest-search/versions/2.26). Please check if it works for you. I investigated and there's no good way of auto-setting a perfect size on all systems. So pls let me know if it works for you now.

UPDATE:
I'll try fixing the scrollbars.

ORIGINAL REPLY:
Quick question: The UI is the "worst" because the dialog sizes are wrong (so scrollbars are showing), or you just don't like Google Chrome-like, HTML based option dialogs? In the former, I can try fixing. In the latter, it was historically due to Addon SDK's no support of traditional Option dialogs. Now it does support but I don't have time to convert this many localized options/engine management UI to the usual non-SDK UI.

On the other hand, now I rather like the quick access to the options using a toolbar button though! If the UI grows on you like it did on me, hope you can reconsider the rating. Otherwise, at least you do agree that the addon's features are great - those are the things I'd spend my limited time working on anyhow. Thanks!