You shouldn't judge a country based on what they did in history. If that'd be the case then nobody would buy any German or Japanese cars, even though they make excellent cars. I make my purchase decision based on quality and price, or best bang for the buck. To me Seagull is a great bang for the buck. But like somebody mentioned above, most of their kits are over built, which makes them heavier than they need to be. That might be good for durability of scale models, but for aerobatic performance the weight can be a factor.
Quality wise they are generally good, but once a while you find an issue. This is when a good distributor like Horizon is important. They took care of the issue in my PC9 kit right away. http://www.rcuniverse.com/forum/m_91...m.htm#11452949
Another good brand from VietNam is BH Models (Black Horse). Their planes incorporate some of the more modern frame structure design found in those light 3D planes, making the planes much lighter than equivalent sized Seagull models.