I am thourly impressed by Asus. My first experience was with the P3V4x motherboard. This was back in the day... wait this was a decade ago. The only bad experience I had with them was when AMD first put out the MP processors, I had the board fail on me 3x in 5 months. But all my other boards have lasted years. The price was a steel to the only competitor from Tyan made it look like Asus would be the true winner. I ended up selling this MP system after 3rd replacement from Asus. I have been very pleased with their customer-care and customer support, and the quality of their boards. I've had a total of 12 different models of motherboards.
My latest build is with the P5Q3 Deluxe With Wifi-N, with so many feature that boggle my mind. I have always looked for Asus' Deluxe models, and I am very impressed by their overclock ability, stability, and quality of components, and features. Probably what is one of the best features of this company is talking to a very knowledgeable customer service representative for when you do have a problem, they are very good at solving the problem, and yes they speak good English!!! I've had some bad experience especially with manufactures such as Soyo, MSI, and AS-Rock.
There is so much more I would like to say about Asus, but I don't want to vent to much air. I find thier product 100% kick ass. Especially the P5Q line deluxe atm.