I use the Scarlett on all my machines, both Linux and OpenBSD, with different microphones, mostly audio-technica AT2020.
While recording, the sound is very low, for some reason. I have to put the control knob to the max to hear something. But that's kinda fine, I can easily make it louder with the software I use to record (ffmpeg) and the sound is fine.
For the features, it seems that other brands (such as Beringher) are doing better for the price. Actually, the former version of Scarlett did include more outputs. So that's definitively something to notice for this price.
Still, I use this tool almost every day for more than a year now, and it is working great. I own several Scarlett, including older models, they all work perfectly.
Of course, being on Linux and OpenBSD, I do not use the provided software. Not that I would actually care, but since I didn't test it, I can't comment on it.