This is also something which might interest the OP enough to try, but one biggie that stopped me from moving on from Presto (I use v11.64) was the ability to move the tab bar to the bottom, like in Excel. Who's crazy idea was it to put browser tabs at the top in the first place? It's much more convenient for me to have them live down the bottom of the screen - that's where my mouse pointer generally is and most of what's on my screen is browsing space. Couple that with right-click & scroll wheel tab switching and I might just be tempted enough to install it as a back-up browser (to 11.64, because I still love the old mail integration... amongst other things, e.g. notes and widgets and such).
Here's v11.64 showing the image above of what I guess is how you must have the tab bar in the latest version. Has there been any change in where you can position the tab bar? Even Firefox lets you put them at the bottom.