Well, you said "very good" and I didn't want to impose my budget on you. I'm sure there are people that will spend over a thousand dollars on a karaoke machine!
As far as Karaoke machine manufacturers go, The company you are referring to, Karaoke USA is a big one. They make several models - most with those small built-in screens, which I really don't like. From this manufacturer, they range between $100 and $500. The one you linked to specifically is normally around $130 - so that's a good price for it. It has two mic inputs and it will take DVD, CD+G, and MP3+G. So it does everything you need. So, I wouldn't say it's crap... and based on your original question, and using it in China, I thought you were doing something professional with it. Since the +G formats are karaoke specific, I would imagine you'll be downloading most of your content. There is a site that has a ton of it for free....
I also found the DV-102 for a little bit less:
VocoPro makes one that is very similar, but is a bit more sturdy.
Then again, for something quite different (and really cool looking, even though I've never personally used it, it is reviewed REALLY well).
or with a speaker stand
And Akai is well known for their Karaoke products as well.
Akai systems are great for at home or parties since they are facing you when you use them... and the prices I found here are really good for them.
Originally, I was thinking you were doing something professional, which has it's own set of requirements. I don't think you would be losing anything at all by going with one of these less expensive systems. If I was buying one right now, I'd probably get the KS-808 - that is a LOT of great product for the price.