This question goes to all Sencha Developers and Sencha Management Team. Now it's not a mystery anymore that Ext4.x is lot slower than Ext 3.x branch. I won't go into more detail since there are already tons of threads in forum related to it.
However, we are in the process of revamping one of our major software, which was originally written in Ext 3.x. Now the question is what should we use in upcoming version. Ext 3 or 4 ? We would really appreciate if anybody can give us an honest opinion regarding this issue. What will be more advantageous using Ext 3 or 4 in long run?