Hi Angelo,
I just recently updated my 1.1.1 firmware to 1.1.3. The reason I updated to 1.1.3 instead of 1.1.4 is that it seems (from what I've read on MMi) that there are less apps that are compatible with Customize and Summerboard. Why go thru all that? And from what I understand, 1.1.4 isn't much of an update.....I don't think that there's really any features that you can really use right now......it's for "future" apps and fixes.
Therefore, stick with 1.1.3 and just enjoy the wonderful world of 3rd party apps.
