AV setup with LS50

I just bought a pair of LS50 and need some help with finding a nice but good value home theatre setup. As I am based in Japan, I have easy access to Japanese amps, etc. I will be using it in a small apartment, in a 2 channel setup. Source will be PC and TV.

How does the following options look?
Marantz NR1609:http://us.marantz.com/us/Products/Pages/ProductDetails.aspx?CatId=avreceivers&ProductId=NR1609
Number of Poweramps 7
Power Output (8 ohm, 20 Hz - 20 kHz, 0.08% 2ch Drive) 50 W
Power Output (8 ohm, 20 Hz - 20 kHz, 0.05% 2ch Drive)
Power Output (6 ohm, 1 kHz, 0.7% 2ch Drive)70 WPower Output (6 ohm, 1 kHz, 10% 1ch Drive)100 W

Onkyo TX-NR686 https://www.onkyousa.com/Products/model.php?m=TX-NR686&class=Receiver&source=prodClass
240 W (3 Ohms, Front)
210 W (4 Ohms, Front)
120 W (8 Ohms, Front)

Yamaha RX-A880
https://jp.yamaha.com/products/audio_visual/av_receivers_amps/rx-a880/specs.html#product-tabs
20Hz-20kHz、2ch: 100W/ch（6Ω、0.06％THD）

Open to suggestions/feedbacks thanks.