Hey I'm the LD, and just wanted to clear somethings up. The only reason why I brought up snapping was that in unity there is an asset called Pro Grids (free version, also I didn't like the default one), and it locks your snapping to a .25. Personally I found this highly annoying when trying to create some things. Now for why I wanted to switch to UDK was that most of us will be going to an art school that does 3D modeling. level design, and animation etc. I found out that the school uses UDK. So I gave UDK a try and I instally fell in love with it after messing with it for a while. I think the main reason was because it felt similar to SDK's Hammer and everything felt so natural to create stuff.