More stable IOS for ME 3600-X

Hi,
Which IOS for ME 3600X switch better suits production deployment (more features, less known/unknown(by TAC) bugs, etc.) ? What are key differences?
The choice is between:
15.3-1.S
15.2-4.S2
wbr,
Alex
DAO21-RIPE       

I've just finished upgrading to 15.3(2)S.  So far so good.  I'm happy with this.
WARNING:  I don't remember which one, I'm suspecting it was 15.2(4)S, but if anyone is upgrading FROM THIS version to anything else, DO NOT use the command "archive download-sw" command.  Here's what going to happen when you do:
1.  Firstly, your CPU will spike so high, you'd think you just killed your appliance;
2.  The entire download "process" will take 1/3 of the actual time and you'd mistakenly think the IOS upgrade has been completed.  Well, NO IT HAS NOT.
If you look for the Cisco Bug Toolkit, it'll say that the workaround is "NONE".  And I've sent a negative feedback about the accuracy of this workaround.
The REAL workaround is to use the "archive tar /x tftp:///IOS.TAR flash:" command.  After the IOS extraction (/x) is done, you may delete the old IOS, change the bootstring and then reload the switch.

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