It is very solid, very easy to use (on Mac OS) and to configure device. All you need is to go through the settings and adjust it to your preferences. If you are in favour of analog sound and consoles then you will love the free plugins that come with your purchase.
I have tested for more than 5 months now and I couldn't be more happy.
the preamps are extremely clean. I have used with sm7b, tlm103 and other mic. the clarity and warm sound it is remarkable (at least for this price range).
also tested with other preamps of the similar range and all I can tell is that you want regret it.
small cons. is that "Focusrite control" is not the best software to setup a device like this, its not very stable and has limited control over monitoring.