Time to replace/upgrade mine and the wife's phones. I've pretty much got the options down to a Sony Xperia M for £9/month, or Xperia SP for £13/month (both on cashback deals)
I'd prefer an Xperia Z, but can't get them for less than £20/month and I just don't want to spend that much.
So, any experience with the M or the SP? Is the SP worth the extra few quid a month?