I haven't installed it on my laptop yet, but on my desktop it doesn't seem any different than FF or Chrome.
If you don't have fuzzy text you probably won't notice anything. On my Laptop it is a subtle difference but still the fonts are a bit easier to read. Unfortunately any net gain is more than offset by being forced to decipher Rorschach tests to click the right tab to change to On my Lappy I have found ComicSans font is easiest to read in most browsers including FF and SlimJet. With this browser I can read that font easily even if it is a bit smaller that I am using with the others. If I could kill the thumbnails I would give it a longer trial.
Even though I have a bunch of browsers installed I mostly use FF. Now and then a site is totally ornery so I have Opera, Cyberfox, FF portable, SlimJet, k-meleon etc.. for trial and error attack.