Thank you all for your patience with a rookie. You are so kind. @gladmo, I agree with you 100 percent on research thoroughly and move slowly. And, thanks a lot for the link. I find it really difficult to research thoroughly as I live in a small town with only 1 serious AV shop 150 miles away. That's part of the reason why I can't answer @soix question about the sound characteristics I'm looking for. I simply haven't had the chance to listen to a lot of HiFi equipment. In fact, may I ask how you guys do your research? Do you try to listen to everyone of them and compare before your purchase?
I guess I am just in a very early stage of my HiFi journey, like @david_ten said. All I recall was when I switched from $100 speaker to Linton, I was like WOW! when I switched from $500 amp to the Strata, I was like WOW! I am looking forward to one step further.