I have a few 11.5's and also had a two 10.3's. I found myself shooting the 11.5's almost exclusively. I eventually sold off the 10.3 uppers and replaced them with more 11.5's . It was more personal preference than anything performance related. I like the little bit of extra rail space for lights/lasers and my go to can is a mini so the OAL added was insignificant. If you are curious try it, you can always sell it off or re barrel it....or go with what you know and like.