Marketo starter template have been really badly tested, they used Litmus to do most of the testing, which is fine for some things but physical testing is even more important. Limón is very similar to Iceberg and I've had lots of issues with that one on Outlook for PC, I spent around 20 hours of development from the out of the box version to get to my final version and the design didn't even change, it took that amount of time to get the bug fixes out of the way. The starter templates miss a few vital things Outlook requires too, i.e. background color should be in the body tag not the in table, as without this, we get a white border around the outer email in Outlook. Weird gaps appear between modules even know the design in Marketo has no gaps, I assume this is down to some Outlook padding or something.
Marketo also put lots of the links in variables, but these links don't come across to the Text Version, so I had to re-write so all links are in the template, a minor thing but something to consider.
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