urgent, wanna buy tommorrow....or not

[kexodusc]

Markw gives excellent advice...
But of the two options you've given, the HTR5660 is far superior IMO...I'm not a fan of anything that posts specs of:
100W x 7 (8 ohms 20 Hz-20kHz, THD 1.09%)
That would just scare me.
The yamaha will deliver clean, dynamic power. I think most here would agree that 85 watt Yamaha receivers will top any 100 or 110 watt Sony receivers for sound quality and true power. I doubt the Sony's power supply could deliver that much juice for an extended period of time.
The 5660 is an excellent receiver.

[htfan14]

Smarter to wait for the 1400, but if you can't(know I could'nt) the Yammy is far better.

[zapr]

Markw gives excellent advice...
But of the two options you've given, the HTR5660 is far superior IMO...I'm not a fan of anything that posts specs of:
100W x 7 (8 ohms 20 Hz-20kHz, THD 1.09%)
That would just scare me.
The yamaha will deliver clean, dynamic power. I think most here would agree that 85 watt Yamaha receivers will top any 100 or 110 watt Sony receivers for sound quality and true power. I doubt the Sony's power supply could deliver that much juice for an extended period of time.
The 5660 is an excellent receiver.

.......What Kexoducs says about yamaha compared to sony to do with power is true. I would hold out for the 1400.........Zapr.

[chimera128]

FYI. I owned two sony ES receivers in the past two years. 1 of them had to be serviced (under warranty) 4 times AND sent to Sony for service. Also the other ES receiver I bought had a hiss issue. You may want to stay away from sony.

[kexodusc]

FYI. I owned two sony ES receivers in the past two years. 1 of them had to be serviced (under warranty) 4 times AND sent to Sony for service. Also the other ES receiver I bought had a hiss issue. You may want to stay away from sony.

To be perfectly fair, though I've never owned a Sony receiver, I know many people that have. They are decent products and perform reasonably well at what they are designed to do.
For the higher quality, better performing receivers (Yamaha, Denon, Marantz, etc) you usually pay a premium. To some this is worthwhile, to others it's not.
The only problem I have with Sony is that they often overcharge for their products, or mislead customers into believing that Sony receivers compete with Yamaha and Marantz (usually by artificially inflating the Watts/channel).
That said, the other brands all do the same thing, try pass off their "mid-level" receivers as higher end equipment. To achieve that, once again you'll usually have to pay a premium.
First decide your needs, wants, and then your budget. Then get the most that you can for it and be happy.