Updating browser

I was doing some updates & under Important, I see both IE10 & IE11. The main reason I'm asking which to go to is because I've read a few posts stating that Gadgets don't work correctly in IE11 & that the Address/Search Bar & Tabs Bar are on the same row & cannot be changed to "Show tabs on a separate row" as before in IE9.

I only use 1 Gadget & it's more for novelty. It's the Death Star Gadget (picture below). I don't remember where I DL'd it from, but I've had it for some time & really like it.

Will I still be able to use my gadget & have Address/Search Bar & Tabs Bar on separate rows if I upgrade to IE11?

Thank you. I'm going w/IE10, I'd rather not go through any problems uninstalling IE11 if I don't like the way my gadget works/looks; then again, I may (at a later date) take the 'security over novelty' approach.

Funny how Gadgets were Microsoft's idea to begin w/& soon after MS said they were not a good idea because of
serious vulnerabilities.

I did find out who created the Death Star Gadget (sergiogarcia9, a member of sevenforums), but I cannot find a way to contact him. His last post (on July 30th, 2010) stated
"Today, i have decided to not post on here anymore. I can be contacted via IM if you need me for anything "