So I'm looking for some sweet carbon rims and the prices of these chinese rims have me intrigued. I've been stalking forums for a few days now, but the amount of information on these threads is rather overwhelming.

I'm looking at either 38mm or 50mm u-shape tubular rims, but I've become worried by people talking about their experiences with pulsing and other brake track defects. Is this typically a problem with tubulars or just clinchers? Is this a common issue with the Chinese wheels?

Also, I've contacted a few companies for quotes. So far Dengfu is the cheapest (184/pair), but I haven't been able to find much information on people's experiences with the Dengfu wheels. I've also spoken with FarSport and velobuildmall and their prices are a tad more expensive (about 80-100 dollars), but the reviews from people have been fairly mixed. If anyone has opinions on the best source for Chinese rims I would really appreciate any information.