มีขอสงสัยอีก Receiver กับ Intregrede เสียงมันต่างกันมากใหมครับจำเป็นที่จะต้องซื้อแยกชุด เอาไว้ฟังเพลงกับดูหนังหรือเปล่าว
The radio frequency is the one you don't want in your system as it interferes with the sound quality. No matter how good they built, it's better not to have tuner inside, if you have a choice. I'm talking about on average.
Receiver/integrate: If you're serious about music, I think it's less expensive to have separate set as it's more expensive to 'force' your hometheater system to sound musical over the long term vs. having a separate set. Typically, I would say hometheater and good music set don't mix well. If you search this webboard, you'll see lots who were in hometheater first struggle to make their set sound goods musically later. From my little experience, I haven't heard any hometheater set that sounds sonically good for music at the same price range.
You seem to shop at electronic superstores

Best Buy and Circuit City. If I'm in the US, I'll try the higher end shop or take advantage of good mail order with return policy.
I'll try
Audio Advisor and
Upscale Audio. If you're serious into music, try Prima Luna Prologue One from Upscale Audio. It's got great review from both Stereophile (Recommended Class

and The Absolute Sound. Not many time both magazines agree on one rig.
I would be rather hesitated for, here today gone 'fast" tomorrow Japanese receivers unless you're really into hometheater, considering your current location, ie you're in the US.