I've used their little older 4x4 matrix and it works great except for one thing....when the power goes out, it doesn't come back on automatically so I have to turn it back on. Not a big deal by any means, I just have to remember to do it.
I'd say you can buy from monoprice with confidence.
The Harmony has the codes for the remote. Which is fortunate for me because the dog DESTROYED the remote right after I programmed my Harmony (I forget which one I have, not the 1000...the 900 maybe?). And now it comes to mind that I could probably program the Harmony to, um, you know, TURN IT ON, too.
And BTW, the replacement remotes for the 4x4 that I have are like $4.00. They cost more to ship than to buy.