Integrated amp

Look into Raven Audio out of Texas.  I have a Reflection MK2 and the sound is awesome.  Different levels and price points.  All Tube amps.  

The Tetra's look interesting. I'd lean towards those instead of the Silverline's.
Both seem to be fairly efficient, and rated at 8 ohms, so they shouldn't be power hungry, but I never listened to either, so I could be wrong.
If going with monitors, you'll probably need a subwoofer to plumb the lower frequencies.
The Onkyo 9050 looks nice, but I think the integrated DAC would be its' weak point.
Do you have a budget for the integrated amp?

nad is good; Creek is a step up

Nuforce is an award winning amp and is very inexpensive - may be a couple on Amazon (return priv. may apply) if people have not snapped them all up yet

My "main" system, for a small room (10x13) is Totem Rainmakers, EPOs elan 10 sometimes Silverline 17. I switch around a lot. Presently using Nikamachi 10, NAD 7400. 

@drhamlingrichard - What is your primary system? What sources will you be using in the 2nd system? What is your budget? Do you have physical size restraints?

Everyone has their favorite. If you don't need a DAC, mine is the Creek 5350 SE. Remote. Detailed. Smooth. Reliable. Great Sonics. Class A-AB. Not digital sounding. Pair it with a Schiit DAC or Cambridge DAC like I do for a great system. 

The NAD D3020. Plenty of analog and digital inputs. It powers my desktop / bedroom system and I’m pretty happy with it. Now selling for about $399 ($100 off original MSRP)

Has a remote, and a "bass boost" setting which I have found useful.

This is the first NAD gear I’ve ever owned. I auditioned the Master Series DAC a while ago, and it was awful. This is quite pleasant. It is also quite small. They make a larger version, but it is digital only.

I find myself often compelled to stop and listen to the music. It took maybe 2-3 weeks for it to break in. The original presentation is not warm, at all, but not unpleasant, just stark, like old ARC. The starkness has worn off a bit now and it’s a touch more romantic.

However, I'm listening via my own LM-1 designs. They are pretty efficient, though obviously bass limited with a 5.25" woofer.

Best,

E