It has been a long time since I looked at it, but (price aside) I seem to recall not being too interested in it because the actually complicated components (tab

It has been a long time since I looked at it, but (price aside) I seem to recall not being too interested in it because the actually complicated components (tables and such) had too many design and functionality constraints. Partly, this was due to designers living in their own dream worlds prior to development, partly to functionality limitations. When you have a green field to play in, buying into Extjs felt like sitting in a tiny pen, even if the grass was very nice.