We switched over quite some time back and, although digi signal does break up in bad weather, mostly it has been OK.
The only point it was bad was when were on the cusp of the switch-over so, until the official date, we stayed on analogue.
Considering where we are I have been quite impressed. We don't get a vary number of channels but it is nice to have a little extra for those rare Nights of TV.
Rgds
Sskye