IMO..

FF on android is a great browser. Much better than anything else - yet has like 1% marketshare. Go figure.

FF on the desktop is an average browser. Chrome and Edge are slightly better.

I use it (mainly for the adblocker), but FF on Android inexplicably fails to run well on certain pages, even after I disabled uBlock Origin and requested the the Desktop versions of the site. humblebundle.com was the last site I recall where I actually had to open it in Chrome Android to get the site to render properly.

You'll have to clear chrome from your defaults and set FF as the default. One of the "features" in 6.0 (I think) is removing the ability to let an application handle an intent "Just Once". Instead, whatever you choose the first time will be the default. It's a very very annoying thing for the (likely very few) of us who like using multiple apps for the same thing

Though I haven't found a way to change the Google search bar default app. There's a menu button "Open in Firefox" after you follow a link, but in Android M you'd get Firefox already by default.

Also can't replace the Google bar with Firefox bar. Well I could change the launcher I suppose, but a bit inconvenient still.

You can make the Google search widget open links in Firefox again here: Settings -> Google -> Search & Now -> Accounts & Privacy -> Open web pages in app [turn this off].

Thanks a lot matthewn, that indeed does the trick!

try turning off JS and just whitelisting sites on mobile - it's in-crea-dible .... content loads, I can navigate through it ... amazing.

I guess you see really lucky :) For me Firefox with or without ad block is the slowest Brower on my phone and my tablet. I really like FF but the reality for me is that it is getting worse and worse . It is noticeable even on my desktop with windows 10 where Bing chrome and edge feel way smoother.