Above all, how responsive their tech support is, both in how quick they answer and how well the suggested solution works for the given question. Having used other component suites before, DevExpress on a constant basis outperforms them in features and quality of their code. Review collected by and hosted on G2.com.
The only gripe I have is that they keep the open curly brace on the same line instead of the next :) Review collected by and hosted on G2.com.
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Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate.