I have one--I use it any time I'm recording "piano with ..." anything else, such as voice, since I always spot mike the piano for clarity if the lid isn't full up.
It's a lightweight, small box, so it's not ultra-sturdy but it holds up in a backpack OK. Very good input overload margins, good phantom powering (I can run four Schoeps mikes properly from it), no extraneous controls. The outputs are on 1/4" phone jacks, which I don't love, but all the back panel space is taken up by the four input sockets.
It's definitely what I'd recommend for lightweight portable recording these days, unless you want a combination unit with the converters and some sort of interface (FireWire, USB, etc.) built in.
Let me know if you have any questions.
--best regards