I'm an application developer focused on providing business solutions. I look for tools which will help me accomplish that task as quickly and easily as possible. I don't have time to develop the tools myself so I buy them. I fully expect to have to dig into the architecture of a component to achieve some of my requirements using the tool, but I also expect the vendor to make this as painless as possible. DevExpress is about 90% of the way there. It's a mature tool with astounding features, flexibility and power. They have pretty decent example projects, with a lot more on their support site. These have helped a lot. There are an incredible number of features which just take some experimentation to learn how to use. As far as special requirements, even though it has sometimes been a chore to dig in and learn how, I've not yet run into anything it CAN'T do in one way or another - and usually several ways. I've dropped a star because I believe they could spend some time and effort on better documentation, especially tutorials. I'd like to see a DevExpress for Dummies so I could have hit the ground running with the product rather than finding out after the fact there was a better/faster way to achieve the results I was after. Don't let that stop you because it's a great product, actually a suite of products, and I've ended up buying most of them ! By the way, I've had no problem with support via email. They've given good support and decent response times, especially considering they're several time zones away.