With the GR you can set a 'snap' mode which fixes the focus at 7 feet, if you then set the aperture priority to f16, your focus range will be 2.8 feet to infinity. The snap mode also eliminates shutter lag.
Originally Posted by bvy
I've never shot the XA4, but I have shot an XA. I think the shutter is quieter than the GR, but the big difference is that winding on with the XA is a series of clicks as you wind the wheel, with the GR it's an electronic motor whirring. It's not really noisy like a motor winder on some SLRs, but I can hear it unless there's lots of street noise.